单项选择题

22（）

A．for
B．in
C．to
D．on

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Student A: I am very grateful to you for taking so much trouble to explain the best way of getting there. Student B: （）
单项选择题
In order to use the water from the stove, there （）be a pipe connecting the tub with the stove.

A．must
B．seemed to
C．needn’t
D．should
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