---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
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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
____for several weeks, the city needed food. A. As having flooded B. being floodedC. Having been floodedD. To flood
A. 选择1
B. 选择2
C. 选择3
D. 选择4