问题
选择题
They are having a meeting, so they are busy ________.[ ]
A. at present time
B. at the present times
C. at present
D. in the present
答案
答案：C
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They are having a meeting, so they are busy ________.[ ]
A. at present time
B. at the present times
C. at present
D. in the present
答案：C