Old ________ Dr Wang is, he often works with us from morning till night.

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Little _______ about his own safety, though he was in great danger himself.

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Not a single song ________ at yesterday’s party.

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So difficult ________ it to live in an English-speaking country that I determined to learn English.

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Only thus ________ finish the task ahead of time.

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It was _______ back home after the experiment.

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A．not until midnight did he go

B．until midnight that he didn’t go

C．not until midnight that he went

D．until midnight when he didn’t go

The old couple have been married for 40 years and never once ________ with each other.

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A．they had quarreled

B．they have quarreled

C．have they quarreled

D．had they quarreled

I like ________ in the autumn when the weather is clear and bright.

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Roses need special care ________ they can live through winter.

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Thank you for your offers, but I can manage it ________. Which of the following is wrong?

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