问题
选择题
—Can you help me with my math lesson this afternoon?
—I’m sorry, I have something important to do.[ ]
A.because
B.and
C.but
D.because of
答案
答案：C
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—Can you help me with my math lesson this afternoon?
—I’m sorry, I have something important to do.[ ]
A.because
B.and
C.but
D.because of
答案：C