Perfect English grammar exercises

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
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