Wemustknowwhatweshoulddoandwha

We must know what we should do and what we should avoid _______ a good impression on others in public places.

A．to leave

B．leaving

C．to have left

D．leave

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相关试题

The number of speech pathologists(who help people who have problems speaking) double by the year 2012.

A．is expected to

B．are expected to

C．expects to

D．expect to

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They have got lost, or had an accident.

A．can

B．might

C．must

D．mustn’t

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But often the drivers just go by, taking the human traffic for granted.

A．sign

B．symbol

C．signal

D．mark

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Webster his American Dictionary of the English Language, which first appeared in 1828.

A．is best known for	B．is most known for
C．is best known as	D．is most known as

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Let’s watch the news on CNN. It at eight o’clock.

A．will start

B．is starting

C．is going to start

D．starts

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