问题
选择题
—There is someone knocking at the door - who it be?
— I think it is John. He told me he would come. [ ]
A. could
B. shall
C. must
D. need
答案
答案：A
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—There is someone knocking at the door - who it be?
— I think it is John. He told me he would come. [ ]
A. could
B. shall
C. must
D. need
答案：A
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