Поставьте правильные предлоги времени, места и направления 1) Alexander goes ... college five days a week. 2) We have modem workshops ... the second floor and a computer classroom ... the third floor. 3) He meets a lot of students ... the conference every year. 4) Tom comes ... the room at sits down ... the weekends. 5) His family likes to go ... of town ... the weekends. 6) The dog is ... the sofa and we cannot see him. 7) His picture hangs ... the divan bed. 8) We have a beautiful vase ... table with a lot of flowers ... it. 9) I see the schoolyard ... the window. 10) The seminar starts ... 10 minutes, ... 12 o,clock.

Вот подробные ответы с правильными предлогами времени, места и направления:

1. Alexander goes to college five days a week.
   Предлог "to" указывает направление (куда идет).

2. We have modern workshops on the second floor and a computer classroom on the third floor.
   Предлог "on" используется при указании этажей.

3. He meets a lot of students at the conference every year.
   Предлог "at" употребляется при обозначении событий, мероприятий.

4. Tom comes into the room and sits down on the weekends.
   "Into" означает «внутрь», движение в помещение. "On" используется с днями недели, в том числе с "weekends".

5. His family likes to go out of town on the weekends.
   "Out of" — из города, направление. "On" — для выходных.

6. The dog is under the sofa and we cannot see him.
   "Under" — под (местоположение).

7. His picture hangs above the divan bed.
   "Above" — над (не касается поверхности, в отличие от "on").

8. We have a beautiful vase on the table with a lot of flowers in it.
   "On" — на поверхности. "In" — внутри (в вазе).

9. I see the schoolyard through the window.
   "Through" — сквозь (в данном случае, сквозь окно).

10. The seminar starts in 10 minutes, at 12 o’clock.
    "In" — через (временной промежуток), "at" — точное время.

Итог:

1. to

2. on / on

3. at

4. into / on

5. out / on

6. under

7. above

8. on / in

9. through

10. in / at