Задание

Open the brackets and put the verb in the right tense: Present Perfect or Present Perfect Continuous.

1. Have you heard? Somebody (knock) at that window.

2. I (read) the book you gave me but I (not/finished) it yet.

3. - Sorry I'm late. - That's all right. I (not/wait) long.

4. Hello! I (clean) my flat. So far I (clean) only one room and there is a lot of work to do.

5. There is a strange smell here. (you/cook) something?

6. My brother is an engineer. He (be) on some business trips this month.

7. I (try) to call you for an hour.