Put the verbs in brackets in the correct tense

Put the verbs in brackets in the correct tense. 
1. I (not see) _____________ your brother recently.
 2. They (not contact) _______________ to each other for a long time. 
3. How long _______________you (study) ______________ English? 
4. How many times _________ you (see) ____________him since he went to Edinburgh? 
5. Who is that woman? I (never/ see) _______________ her before.
6. We (be) ____________ from French. We (be) ______________ there for 20 years.
7. I (see) __________ that film several times because I like it. 
8. Mary (lose) _________________ her hat for 2 days. 
9. He (not finish) _______________ doing it yet. 
10. He (not see) ____________ him since Christmas.

** Đáp án + Giải thích **