Пожалуйста, помогите, СРОЧНО!

Perfect English grammar exercises. Fill in the gaps with the right forms of the verbs in bold at the end of the sentences in Present Perfect Tense. Remember to use the correct forms for the third person singular!

1. She _ the window. open
2. She _ our her copybook. take
3. We _ here for more than half an hour. be
4. Tom _ this play, but i haven't. see
5. Bob _ out. He is not here. go
6. We _ to open the door, but we can't do it. try
7. They _ out of milk and they must buy some. run
8. Chris _ a new car. buy
9. They _ me these pears. give
10. I _ to tell you about it. Forget

1. She has opened the window.

2. She has taken her copybook.

3. We have been here for more than half an hour.

4. Tom has seen this play, but i haven't.

5. Bob has gone out. He is not here.

6. We have tried to open the door, but we can't do it.

7. They have run out of milk and they must buy some.

8. Chris has bought a new car.  

9. They have given me these pears.

10. I have forgotten to tell you about it.