Ответ:

Первое задание

1. am sitting

2. am having

3. Is Jack watching

4. is checking

5. Is John doing

6. is walking

7. is going

Второе задание

1. Is he speaking

2. doesn't rain

3. you're working

4. Do you prefer

5. I'm staying

6. what does she want

7. are you studying

8. She's working

Третье задание

1. go

2. moment

3. listen

4. free

5. take

6. has

7. long

8. these

Объяснение: