Ответ:

1. is having

2. is preparing

3. is helping

4. are waiting

5. is talking

6. is phoning

7. is not working

Объяснение:

Present Continuous - образуется с помощью глагола to be + глагол-действие с окончанием -ing.
to be имеет 3 формы в настоящем времени: am (I), is (he, she, it), are (you, we, they), соответственно, находим подлежащее в каждом предложении и подбираем нужную форму:

1. group = it is

2. one = he/she is

3. receptionist = he/she is

4. drivers = they are

5. Dan = he is

6. he is

7. computer = it is

Ответ:

1 have

2 prepare

3 help

4 wait

5 talk

6 phone

7  not work

Объяснение: