单项选择题

It is not clear yet when the teachers( )strike will return to their classrooms.

A. in
B. at
C. on
D. from
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单项选择题
If( ),please let me know by this evening.
A. is possible
B. possible
C. it possible
D. possibility
单项选择题
It is not clear yet when the workers( )strike will return to their factories.
A. in
B. at
C. on
D. from
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