IV)

1 . has done

2 . was paying

3 . hasn't slept

4 . was broken down

5 . hasn't flown

6 . Did they go

7 . have heard

8 . tried on

9 . didn't have

10 . haven't seen

V)

1 . did/went

2 . has lived/moved

3 . told/has learnt

4 . has worked/retired

5 . got/has already started

6 . came/ has changed

7 . has grown

8 . came/has waited

1.Anita said she was very sorry for what she (do)………had done……………………

2. When Sam (pay)……paid……………. The bill, we left the restaurant and went home.

3. It wasn’t surprising that she was tired .She (not sleep)……………hadn't slept…….. for two days.

4. The road was blocked because a lorry (break down)………broke down……………….. 5. My mother felt very nervous on the plane because she (not fly)………hadn't felt………..before. 6…………had they gone…………………….(they/go) home when you arrived? 7. I (hear)…had heard…………the story before , so I didn’t find it very interesting. 8. After she (try on)………tried on…………….. all the dresses in the shop, she bought the most expensive one. 9. They (not have)……didn't have…………..breakfast when I got up. 10. The children were very excited because they (not see)……didn;t see…………….a tiger before.

V. Complete the sentences withthe correct form of the verbs in brackets.

1.After Nick (do)……did…………..his homework , he (go)………had gone………..to bed last night. 2. Mai (live)……had left………..in HaiPhong for five years before she (move)……moved……… to Ha Noi three years ago. 3. Phong (tell)………told……..me yesterday that he (learn)……had learnt………..French for a year. 4. Ms Hong (work)………had worked……….at our school for twenty years before she (retire)…retired……….last June. 5. By the time I (get)………got………….to Nick’s house , his party (already/start)……had already started……….. 6. When we (come) ………………came………..back to our home village last month , it (change)………had changed……………………so much. 7. I couldn’t recognize my cousin because he (grow)…………grew………………..a lot. 8. By the time the bus (come)…came…………this morning, Duong (wait)…………had wated……..for it for half an hour. Xin nhờ các cao nhân