问题详情:
I am sorry I have kept you _____ for such a long time.
A. wait B. to wait C. waiting D. waited
【回答】
C
知识点:动词和动词短语
题型:选择题
问题详情:
I am sorry I have kept you _____ for such a long time.
A. wait B. to wait C. waiting D. waited
【回答】
C
知识点:动词和动词短语
题型:选择题