—Whenshallwegoplantingtreesint

— When shall we go planting trees in the hill?
—______ it begins to rain, so they don’t need watering.

A．Not until

B．While

C．Till

D．Unless

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二、单项选择
Don’t worry too much about ________ mistakes. They’re ________ natural part of learning something.

A．the; the

B．/; the

C．the; /

D．/; a

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—We’d better go downstairs right now for lunch.
—__________ They serve food 24 hours a day.

A．Hurry up!	B．Take your time.
C．No way!	D．It doesn’t matter.

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Nowhere else, as his mother told us, __________ except the cabin in the backyard.

A．did he go

B．he did go

C．went he

D．he went

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We’re all ready to put it into operation, ____________, we’re going to take action as fast as possible.

A．on the whole

B．in general

C．in conclusion

D．in other words

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—Your flight was quite late last night.
—Yes, it was midnight __________ our plane finally got to Jinan.

A．that

B．when

C．since

D．until

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