问题
选择题
all the students went to Beijing for a visit, we couldn't find anyone in our classroom. [ ]
A．Because; so
B．Because; but
C．Because; /
答案
答案：C
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all the students went to Beijing for a visit, we couldn't find anyone in our classroom. [ ]
A．Because; so
B．Because; but
C．Because; /
答案：C