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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热门试题

单项选择题

It can be learned from the passage that about four billion years ago （）.

A．the earth was in molten state
B．the earth surface temperature was above 100℃
C．the earth surface temperature was below 100℃
D．rain water could remain on the earth

单项选择题

Student A: I am very grateful to you for taking so much trouble to explain the best way of getting there. Student B: （）.

A. What happened
B. Nice to meet you.
C. please take it easy.
D. No trouble at all.
E. Coffee, please.
F. I forgive you.
G. But he panned to.
H. Can I have the bill