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單項(xiàng)選擇題

I’ve come to ask him for the book. That’s why I （） wait until he comes back.

A.need
B.should
C.oughtto
D.have to

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Mr. Baker, a dozen students want to see you. （） they wait here or outside?

A.Should
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單項(xiàng)選擇題

I （） help. I can do it myself.

A.need to
B.don’t need
C.needn’t
D.need