问题
选择题
It's two and a half weeks since the exchange students _____Wuxi. [ ]
A. arrived
B. reached
C. have been in
D. have arrived in
答案
答案：B
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It's two and a half weeks since the exchange students _____Wuxi. [ ]
A. arrived
B. reached
C. have been in
D. have arrived in
答案：B