Đáp án:
2. We (not get) haven't got in touch with him for years.
3. How long have you (know) known.Mrs Chi ?- I (know) have known here for five years.
4. We (not see) haven't seen her since we (be) were on holiday in Ha Long Bay.
5. Would you like some coffee? I have just (make) made some.
6. I (try) have tried to learn English for years, but I (not) haven't succeeded yet.
7. Jack (go) has gone to Paris for a holiday. He (never be) has never been there.
8. I (read) have read that novel by Hemmingway several times before.
9. We (study) study almost every lesson in this book so far.
10. Mr Jone (be) has been the principal of our school since last year