Bythetimeherealizesthemistakeh

By the time he realizes the mistake he ________，it will be too late for him to do anything about it.

A．has made

B．made

C．makes

D．will make

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A．hungry and frightened	B．hungrily and frightening
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A．a ; the

B．不填；the

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D．the ；an

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A．Persistence is needed	B．Persistence is what you need
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A．provided

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C．though

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