单项选择题

They demanded that another experiment （）.

A、be made
B、would be made
C、were made
D、had been made

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单项选择题
It is high time that we （） our own decisions.

A、make
B、made
C、to make
D、have made
单项选择题
He tried to join the football team but was （） because of poor health.

A、turned down
B、turned out
C、turned up
D、turned over
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