1) Samuel has kept a diary in 1997
2) We have learned English for five years
3) I have lived in HCM city since I was 8
4) She started teaching the children in this remote village five months ago
5) The last time he wrote to me was in April
6) She last swam five years ago
7) She hasn't seen her elder sister since 1999
8) They haven't talked to each other for two months
9) It's years since she wrote me
10) It's ten years since Robert and Cathorine married
11) They have cleaned their room for two weeks
12) John has had his hair cut for over six months
13) When did you last ride a bicycle?
14) When did he last write to you?
15) How long is it since he last talk to you?
16) How long is it since you last telephone him?
17) It's the first time we have eaten this kind of food
18) I have never seen this film before
19) He hasn't gone abroad before
20) This is the first time she has met such a stranger person like this
21) This is the first time we have watched such a good film like this one
22) I haven't had my hair cut since I left her
23) She hasn't phoned me for 5 months
