问题
选择题
— How long do you think it is he arrived here?
— Only half a year I believe.[ ]
A. when
B. since
C. before
D. that
答案
答案：B
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— How long do you think it is he arrived here?
— Only half a year I believe.[ ]
A. when
B. since
C. before
D. that
答案：B