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新概念英语网权威发布新概念英语第二册练习答案lesson 4 An exciting trip，更多新概念英语第二册练习答案lesson 4 An exciting trip相关信息请访问新概念英语网。

1．关键句型练习答案
A 1 I have just had breakfast.
2 He has been in prison for six months.
3 The police have not caught the thief yet.
4 You have (already) asked that question three times (already).
5 Have you ever been to Switzerland?
6 I have never been to Switzerland.
7 He is a wonderful runner. He has broken two records so far .
8 I haven"t seen George lately .
C 1 He has just left the house .
2 He has just had breakfast .
3 She has just written a letter .
4 My sister has just turned on the radio .
5 My mother has just made the bed .
6 She has just bought a new hat.
D 1 He hasn"t washed the dishes yet .
2 She hasn"t made the beds yet .
3 He hasn"t combed his hair yet .
4 She hasn"t swept the carpet yet .
5 We haven"t read ‘ Macbeth’yet .
E 1 Have you seen the new play at ‘The Globe’yet ?
2 Have you taken your holidays yet ?
3 Have you read this book yet ?
4 Have you done your homework yet ?
5 Have you finished your work yet ?
2 ．难点练习答案
1 received 2 received 3 took 4 taken 5 take
3．
多项选择题答案
1d 2b 3a 4b 5b 6a
7c 8b 9c 10a 11c 12c

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