问题
选择题
—It is strange that Dave didn't respond________any of my emails.
—Something must have happened to him.[ ]
A. on
B. with
C. for
D. to
答案
答案：D
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—It is strange that Dave didn't respond________any of my emails.
—Something must have happened to him.[ ]
A. on
B. with
C. for
D. to
答案：D
