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In vain ______ to get in touch with the Embassy.
In vain ______ to get in touch with the Embassy.
admin
2010-02-17
25
问题
In vain ______ to get in touch with the Embassy.
选项
A、they tried
B、tried they
C、did they try
D、they have tried
答案
C
解析
in vain句首倒装，是半倒装，正确答案是C。
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0
专业英语四级
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