PAST SIMPLE vs PAST CONTINUOUS
Write the correct form of the verbs in brackets.

a.- I did not see (not see) Susan when I was walking (walk) in the park.
b.- While she was doing (do) her homework, her father came (come) home.
c.- When David saw (see) Tom, he was not working (not work), he was sleeping (sleep) at his desk.
d.- The burglar came (come) while they were playing (play) loud music.
e.- They did not hear (not hear) the burglar because they were playing (play) the music too loudly.
f.- The dog was barking (bark), but nobody came (come).
g.- I was watching (watch) TV when my aunt arrived (arrive).
h.- He was studying (study) in Salamanca when the Civil War began (begin).
i.- The lion was not hunting (not hunt) when the man shot (shoot) him.
j.- We were playing (play) cards when the fire started (start).
k.- He gave (give) her the ring as the train was leaving (leave).
l.- They saw (see) the monkeys while they were visiting (visit) the zoo.
m.- We were driving (drive) to the hospital when the baby was born (be born).
n.- Shakira was singing (sing) in a concert when she lost (lose) her voice.
o.- The police stopped (stop) me because I was not wearing (not wear) any clothes.
p.- What were you doing (you / do) when the accident happened (happen)?
q.- While we were walking (walk) in the mountains, we saw (see) bear tracks.
r.- My neighbour met (meet) her husband while she was traveling (travel) around Catalonia.
s.- The students were playing (play) games on the computer when the teacher arrived (arrive).
t.- Jim broke (break) his leg when he was playing (play) football.
u.- I saw (see) an old friend while I was waiting (wait) for the bus.
v.- My mother lost (lose) her purse when she was walking (walk) home.
w.- I was doing (do) my homework when the storm began (begin).
x.- While I was having (have) a shower, the lights went out (go out).
y.- When the bell rang (ring), we were playing (play) football.
z.- When the students were running (run) in the park, Cristina fell over (fall over).

Вот подробное объяснение о различиях Past Simple и Past Continuous, а также правильные формы глаголов для предложений:

Past Simple vs Past Continuous

1. Past Simple:

   • Используется для действий, которые завершились в прошлом.
   • Обычно отвечает на вопрос "что произошло?".
   • Сигналы: yesterday, last night, two days ago, in 1990 и т. д.
   • Пример: I walked to the park.

2. Past Continuous:

   • Используется для описания действия, которое происходило в определенный момент в прошлом или когда его прервало другое действие.
   • Обычно отвечает на вопрос "что происходило в тот момент?".
   • Сигналы: while, when, at that moment и т. д.
   • Пример: I was walking in the park when it started to rain.

Упражнение с правильными формами глаголов:

a. I did not see (not see) Tom when I walked in the park.
→ Я не видел Тома, когда гулял в парке.

b. While she was doing (do) her homework, her father came (come) home.
→ Пока она делала домашнюю работу, её отец пришёл домой.

c. When David saw (see) Tom, he was sleeping (sleep).
→ Когда Дэвид увидел Тома, тот спал.

d. The burglar came (come) while they were playing (play) loud music.
→ Грабитель пришёл, пока они громко слушали музыку.

e. They did not hear (not hear) the burglar because they were playing (play) the music too loudly.
→ Они не услышали грабителя, потому что громко слушали музыку.

f. The dog was barking (bark), but nobody came (come).
→ Собака лаяла, но никто не пришёл.

g. I was watching (watch) TV when my aunt arrived (arrive).
→ Я смотрел телевизор, когда приехала моя тётя.

h. He was studying (study) when the burglar came (come) in.
→ Он занимался, когда грабитель вошёл.

i. The lion was not hunting (not hunt) when the man shot (shoot) him.
→ Лев не охотился, когда человек выстрелил в него.

j. We were playing (play) cards when the fire started (start).
→ Мы играли в карты, когда начался пожар.

k. He gave (give) her the ring as the train was leaving (leave).
→ Он подарил ей кольцо, когда поезд отправлялся.

l. They saw (see) the monkeys while they were visiting (visit) the zoo.
→ Они увидели обезьян, пока были в зоопарке.

m. We were driving (drive) to the hospital when the baby was born (be born).
→ Мы ехали в больницу, когда родился ребёнок.

n. Shakira was singing (sing) in a concert when she lost (lose) her voice.
→ Шакира пела на концерте, когда потеряла голос.

o. The police stopped (stop) me because I was not wearing (not wear) any clothes.
→ Полиция остановила меня, потому что я был без одежды.

p. What were you doing (you / do) when the accident happened (happen)?
→ Что ты делал, когда произошла авария?

q. While we were walking (walk) in the mountains, we saw (see) bear tracks.
→ Пока мы гуляли в горах, мы увидели следы медведя.

r. My neighbour met (meet) her husband while she was travelling (travel) around Catalonia.
→ Моя соседка встретила своего мужа, путешествуя по Каталонии.

s. The students were playing (play) games on the computer when the teacher arrived (arrive).
→ Студенты играли в компьютерные игры, когда пришёл учитель.

t. Jim broke (break) his leg when he was playing (play) football.
→ Джим сломал ногу, играя в футбол.

u. I saw (see) an old friend while I was waiting (wait) for the bus.
→ Я встретил старого друга, пока ждал автобус.

v. My mother lost (lose) her purse when she was walking (walk) home.
→ Моя мама потеряла сумку, пока шла домой.

w. I was doing (do) my homework when the storm began (begin).
→ Я делал домашнюю работу, когда началась гроза.

x. While I was having (have) a shower, the lights went out (go out).
→ Пока я принимал душ, свет выключился.

y. When the bell rang (ring), we were playing (play) football.
→ Когда прозвенел звонок, мы играли в футбол.

z. When the students were running (run) in the park, Cristina fell over (fall over).
→ Когда студенты бегали в парке, Кристина упала.

Использование Past Simple и Past Continuous зависит от контекста: действие завершено или находилось в процессе.