题目内容

The secretary worked late into the night, ___ a long speech for the president. A. to prepare B. preparingC. prepared D. was preparing

A. 选择1
B. 选择2
C. 选择3
D. 选择4

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---I must apologize for _______ahead of time.---That’s all right. A. letting you not know B. not letting you know C. letting you know not D. letting not you know

A. 选择1
B. 选择2
C. 选择3
D. 选择4

---You were brave enough to raiseobjections at the meeting.---Well, now I regret _____ that. A. to do B. to be doingC. to have done D. having done

A. 选择1
B. 选择2
C. 选择3
D. 选择4

She is writing a letter to a friend of hers, ____him to attend the meeting. A. having invitedB. invitingC. to invite D. invited

A. 选择1
B. 选择2
C. 选择3
D. 选择4

____ the classroom, the students went to the playground to watch the football match. A. To clean B. Having cleanedC. Cleaned D. Cleaning

A. 选择1
B. 选择2
C. 选择3
D. 选择4

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