单项选择题

It is imperative that students _______their term papers on time.

A．hand in
B．would hand in
C．have to hand in
D．handed in
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单项选择题
_________ if I had arrived yesterday without letting you know beforehand
A．Whould you be surprised
B．Were you surprised
C．Had you been surprised
D．Would you have been surprised
单项选择题
________, I'll marry him all the same.
A．Was he rich or poor
B．Whether rich or poor
C．Were he rich or poor
D．Be he rich or poor
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