1A last talked to Daisy
2D since i saw (htht.....since......qk)
3D my friend had left (chia QKHT -> hđ xảy ra trước QKĐ)
4D After i had had a cup of coffee, i came to class
5C it's hours since Jane rang
6B they haven't met for a long time (HTHT , for + khoảng tgian)
7A it's years since i stayed in a hotel
8B This is the first time i have read a good book (This is the first time + S + have/has + P2: Lần đầu làm gì)
9D she has learnt English for ten years
10D A&B
11B she has played the piano for 3 years
12A we haven't gone to the cinema for 2 months
13B it is three months since he lost the job
