单项选择题

The examiner made us ______ our ID card in order to be admitted to the test center

A．showing
B．to show
C．showed
D．show
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单项选择题
Little ______. that I was never able to see that kind old man again.
A．I thought
B．was I thinking
C．I would think
D．did I think
单项选择题
Why haven't you taken the medicine It ______ before dinner
A．should have been taken
B．has been taken
C．is taken
D．should have taken
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