单项选择题

It was vital that we ________ every measure to protect the beautiful scenery around the lake.

A．have to take
B．take
C．must take
D．will take
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单项选择题
We warned the children time and again _________ the electric lamp.
A．not to touching
B．should not touch
C．not touch
D．not to touch
单项选择题
Dream of the Red Chamber is said to _________ into several foreign languages in the last decade.
A．have been translated
B．have translated
C．be translated
D．translate
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