Doyouknowhowlongthedinosaurson

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Do you know how long the dinosaurs _____ on the earth before their extinction?

A．had existed	B．had been existed
C．have existed	D．have been existed

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_______he really means is ________he disagrees with us.

A．What … that

B．That … what

C．Why … that

D．If … what

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____ we'll go camping tomorrow depends on the weather.

A．If

B．Whether

C．That

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You can't imagine ____ when they received these nice Christmas presents.

A．how they were excited	B．how excited they were
C．how excited were they	D．they were how excited

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____ you don't like him is none of my business.

A．What

B．Who

C．That

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A．What, what

B．What, that

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