Nooneknowsexactlywhenourancest

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No one knows exactly when our ancestors started talking, but new evidence suggests that____ might have happened a long time ago.

A．which

B．what

C．it

D．they

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相关试题

I can’t ______ him with my little affairs.

A．bother	B．expose
C．criticize	D．contradict

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He ______ say what he thought.

A．dares not	B．hasn’t dared
C．dare not to	D．didn’t dare to

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— Would you please help me carry this heavy box upstairs?
— ______.

A．My pleasure	B．With pleasure
C．For pleasure	D．A pleasure

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When the party was over, he ______ his friends good-bye and ______.

A．bade; departed	B．said; left
C．waved; went	D．remarked; retired

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It was in 1969 ___ the American astronauts first succeeded in landing on the moon.

A．that

B．when

C．which

D．in which

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