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 ?
has the icebreaker arrived at the port?
have the experiments haven't proved the theory
have you read your first professional book in English?
he hasn't repaired the computer.
she hasn't shown me the models.
haven't they brought their textbooks?