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單項(xiàng)選擇題

Let's not wait any longer, he might not（）at all.

A.turn over
B.turn up
C.turn on
D.turn down

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單項(xiàng)選擇題

One day while Mr. King was working, he had a(an)（）and his left leg was badly injured.

A.business
B.accident
C.matter
D.event

單項(xiàng)選擇題

It is assumed that students at an intermediate level will have a good（）of the basic structures and vocabulary of English.

A.command
B.commanding
C.to command
D.commanded