It’snaturalthatamancanhardlyas

It’s natural that a man can hardly ______ a smile when he hears some good news.

A．hold up

B．hold back

C．hold off

D．hold on

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

A．which

B．what

C．it

D．they

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—Do you think_____ worthwhile to go all the way to Los Angles to buy that computer?
—Well ,I’m going to visit some relatives, too.

A．it

B．/

C．this

D．that

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A．it

B．one

C．that

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—Does _____please you to give gifts to others?
—Sure．

A．it

B．that

C．one

D．he

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He didn’t make ______ clear when and where the meeting would be held.

A．this

B．that

C．it

D．these

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