单项选择题

He could not start the engine,no matter（） hard he had tried.

A．when
B．where
C．what
D．how
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I’d like to（） a double-room with a bath in your hotel from June 3 to 12.
A．promise
B．propose
C．book
D．check
单项选择题
It is desired that new rules（） to the attention of all the students.
A．shall be brought
B．will be brought
C．would be brought
D．be brought
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