С.здесь нужно открыть скобки ,используя present continuous или present perfect 1. who (to write) this article already? 2. they (to learn) a lot of english words. 3. what she (to teach) them now? 4. what you (to look) for? 5. you (to find) the book already? 6. what you (to talk) about? 7. they (to ask) me several questions. 8. i (to answer) the telephone right now. 9. you just (to hear) tomorrow’s weather forecast? 10. he (to fix) his car and now he (not to have) any trouble with the brakes anymore.

Has written
have learned
What is she teaching
What are you looking
Have your found
What are you talking
They have asked
am answering
Have you just heard
He has fixed, ???
Вроде так.

1 who has written this article already?
2 They have learnt a lot of English words.
3 what is she teaching them now?
4 what are you looking for?
5 have you found the book yesterday?
6 what are you talking about?
7 they have asked me several questions.
8 I am answering the telephone right now.
9 have you just heard tomorrow 's weather forecast?
10 he has fixed his car and now he isn't having any trouble with the brakes anymore.