单项选择题

When water ______, it will be changed into vapour.

A. is heated
B. will be heated
C. will heat
D. has heated
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单项选择题
It ______ that the football match ______ put off because of the rain.
A. suggested; would be
B. suggested; should be
C. is suggested; shall be
D. was suggested; be
单项选择题
The things talked about in this report ______ over a year ago.
A. had taken place
B. took place
C. have taken place
D. were taken place
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