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Choose the correct option to complete the sentences. Present perfect
1) I...... proved that you can survive
a) have b) has
2. she......... paid tales
a) have b) has
3. we........ worked this week
a) have b) has
4. he......... studied todas
a) have b) has

change the following sentences to negative
1. I have done my homework

2. peter has lost his pencil

3. she has been to France

4. you have read this book

5. they have had many jobs
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