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單項選擇題

At the moment our technology is more advanced than theirs, but they are（）fast.

A.catching up
B.catching on
C.catching at
D.catching out

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單項選擇題

The machine comes with（）useful accessories.

A.a whole amountof
B.a whole numberof
C.a whole hostof
D.a whole sumof

單項選擇題

His suggestion（）more people to have jobs.

A.made
B.let
C.had
D.allowed