Present perfect II. Make up questions and negatives according to the model.

1. the icebreaker / arrive at the port ?
2. the experiments / not prove the theory .
3. you / read your first professional book in English ?
4. he / not repair the computer .
5. she / not show me the models .
6. they / not bring their textbooks ?

AD1628    1   14.02.2021 13:01    1