单项选择题

I could hear nothing except the roar of aircraft engines which () all other sounds.

A．overcame
B．overtook
C．suppressed
D．drowned

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单项选择题

Shoes are often () when they are new.

A．staff
B．stuff
C．stiff
D．stuffy

单项选择题

I promise to look()the matter as soon as I get back to the head office.

A．into
B．in
C．for
D．after

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