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單項(xiàng)選擇題

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

A.Should
B.Will
C.Shall
D.Are

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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

單項(xiàng)選擇題

Since the road is wet,（） last night.

A.it   must   have rained
B.it   must   rain
C.it   must   be    raining
D.it   must   have   been raining