4.Поставьте глаголы в нужное время и нужную форму Present Simple, Present
Continuous, Present Perfect, Present Perfect Continuous, Past Simple, Future Simple:
1. Look! Peter (to stay)
at the back door.
2. We (to miss)
the bus. Now we'll have to walk.
3. How long you (to be)
here?
4. I (to look)
them yet.
for my keys all the morning but I (not/to find)
5. Modern trains (to go)
very fast.
to the cinema next weekend, I think.
6. He (to go).
7. Ann (to like)
8. My parents (to buy).
9. I (to write)
playing tennis.
a delicious cake yesterday.
_ a letter for 2 hours.
10.Helen (to dance)
now.
11.Sam (to feed )
12. Nick (not to read)
13.Alice and Den (to be)
14.The doctor (to prescribe)
already the kitten.
_books every day.
at the café yesterday.
_a medicine to my granny two days ago.
nice and green.
15.Our town (to be).​

Ответ:

1. Look! Peter (is staying)  at the back door.

2. We (have missed)  the bus. Now we'll have to walk.

3. How long have you been here?

4. I (have been looking)  for my keys all the morning but I (have not found)

them yet.  

5. Modern trains (go)  very fast.

6. He (will go) to the cinema next weekend, I think. .

7. Ann (likes)  playing tennis.

8. My parents (bought) a delicious cake yesterday. .

9. I (have been writing)  a letter for 2 hours.

10.Helen (is dancing)  now.

11. Sam has already fed the kitten.  

12. Nick (does not read)  books every day.

13. Alice and Den (were)  at the café yesterday.

14.The doctor (prescribed)  a medicine to my granny two days ago.

15. Our town (is) nice and green.