Выполните грамматическое упражнение

Ответ:

Объяснение:

1. have been waiting

2. has been running

3. have been studying

4. have you been learning

5. has been taking

6. haven't been exercising

7. have been cooking

8. has been going

1. have been boiling

2. has been waiting

3. has been sending

4. have been trying

5. have been learning

6. has been drilling