Rewrite the sentences

Rewrite the sentences.
Ex: They were married five years ago.
 -> They have been married for five years.
1. The last timewe saw her was on Christmas.
 We haven't...
2. I haven't eaten this kind of food before.
 This is...
3. It started raining an hour ago.
 It has...
4. We haven't visited my grandfather for two months.
 The last time...
5. I have studied English for three years.
 I began...
6. My brother hasn't seen his best friend for nearly five years.
 It's...
7. When did you start learning English?
 How long...
8. We started living here fifteen years ago.
 We have...
9.  The last time she visited me was five years ago.
 She hasn't...
10. I last wrote to my uncle in July.
 I haven't...
11. It's long time since we became close friend.
 We have...
12. Minh began to collect stamps in 2000.
 Minh has...