Поставьте глаголы в скобках в форму Present Continuous Tense. 1. He (go) to school now. 2. The teacher (speak) English now. 3. The pupils (read) in the library. 4. The man (wait) for Pete. 5. They (write) exercise 2 in their exercise-books. 6. Don (smell) the roses.

Форма Present Continuous образуется так: am / is / are + глагол с окончанием -ing.

Правильные варианты:

1. He is going to school now.

2. The teacher is speaking English now.

3. The pupils are reading in the library.

4. The man is waiting for Pete.

5. They are writing exercise 2 in their exercise-books.

6. Don is smelling the roses.

Если разбирать по правилам:

• he, the teacher, the man, Don — это 3 лицо единственного числа, поэтому ставим is;

• the pupils, they — множественное число, поэтому ставим are;

• к смысловому глаголу добавляется -ing:
  go → going, speak → speaking, read → reading, wait → waiting, write → writing, smell → smelling.