单项选择题

We find that some birds ______ twice a year between hot and cold countries.

A. transfer
B. commute
C. migrate
D. emigrate
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单项选择题
______ for a long time, the fields are all dried up.
A. There has been no rain
B. Having no rain
C. There having been no rain
D. There being no rain
单项选择题
She never laughed, ______ lose her temper.
A. nor she ever did
B. or she ever did
C. or did she ever
D. nor did she ever
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