These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．

These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．

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would have been unthinkable

would not be unthinkable

would be unthinkable

would not have been unthinkable

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 —Do you think George has passed the driving test?—No. If so, he ______ his car to our college yesterday.

#86566

would drive

drove

would have driven

had driven

They        have arrived at lunchtime but their flight was delayed.

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will

can

must

should

— Could I borrow your dictionary ? — Yes , of course you ____ .

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might

will

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How_________I help them to understand when they won’t listen to me?

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can

would

may

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 He hesitated for a moment before kicking the ball; otherwise, he ___________ a goal.

#86590

would score

scored

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had scored

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