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21. “What’s your opinion on the matter, please?” “Oh, sorry, I _______.”

A. wasn’t to listen                                     B. haven’t listened

C. wasn’t listening                                     D. hadn’t listened

22. “Aha, you’re a chain smoker!” “Only at home. Nobody _______ that but you.”

A. discovered                                            B. had discovered

C. discovers                                              D. is discovering

23. The telephone _______ three times in the last hour, and each time it ________ for my father.

A. had rang; was                                       B. has rung; was

C. rang; has been                                       D. has been ringing; is

24. The thief tried to break away from the policeman who ______ him, but failed.

A. has held                                               B. had held

C. was holding                                          D. would hold

25. When I arrived at the company, the manager ______, so we had only time for a few words.

A. just went away                                      B. had gone away

C. was just going away                              D. has just gone away

26. “John took a photograph of you just now.” “Oh, really? I ______.”

A. didn’t know                                         B. wasn’t knowing

C. don’t know                                           D. haven’t known

27. “Mike is not coming to the football game this afternoon.” “It’s a shame! He _______!”

A. promises                                              B. promised

C. will promise                                         D. had promised

28. Please call again. Jim _______ a bath just now.

A. has had                                                B. was having

C. is having                                              D. has

29. “Was Andrew there when you arrived?” “Yes, but he ______ home soon afterwards.”

A. had gone                                              B. has gone

C. is going                                                D. went

30. “Where is Mother.” “She is in the kitchen. She _______ the housework all morning.”

A. is doing                                               B. was doing

C. has done                                               D. has been doing

31. The books, ________ the dictionaries, must be put back where they ________.

A. included; were                                      B. to include; are

C. including; were                                     D. including; are

31. 選 C。第一空including不填 included，因為其后帶有賓語；第二填 were，是因為它是指“原來放的地方”。

【答案與解析】

1. 選D。根據那個小男孩徘徊的現象，推知他可能是找不到媽媽了。用現在完成時表示結果。

2. 選C。句意為“好在我們（剛才）沒有去公園，因為天（現在）已經開始下雨了”。

3. 選D。用現在完成進行時表示持續到現在的一段時間。

4. 選B，用現在完成時表示結果，即你已經錯過了機會，其結果是：你只能等。

5. 選C。用現在完成時表示影響。

6. 選B。用現在完成時表示影響或結果，即現在筆不見了，是由于某人已經把它拿走了的結果。

7. 選D。用現在進行時表示現在正在進行的動作。

8. 選A。從下文的語境看，既然現在叫對方重復一遍，說明“沒聽清對方的最后一點”應發生在過去（即說此話之前）。

9. 選B。用現在完成時表示從過去持續到現在的一段時間。

10. 選B。before 用作副詞時不與具體時間連用，泛指“以前”，通常與一般過去時或現在完成時連用。

11. 選C。用現在進行時表示目前的一種狀態。

12. 選C。用現在完成時表示影響或結果，即他整個星期都在國外，所以你說你在劇院見過他，你一定是搞錯了。

13. 選D。“把書忘在辦公室”發生在“去取書”這一過去的動作之前，因此“忘了書”這一動作發生在過去的過去，用過去完成時。句中when表示的是時間的一點，表示在“同學們正忙于……”這一背景下，when所引導的動作發生。因此前一句應用過去進行時。

14. 選D。注意even as 的意思，它表示“正當……的時候”或“恰當……的時候”。

15. 選B。注意下文語境——事實上，我昨天就做完了。從該回答的語氣上推測，填空處應填現在完成時態。

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