Thoughtheprofessortriedhisbest

Though the professor tried his best to explain the difficult question, the students still looked _____.

A．confusing	B．being confused
C．to confuse	D．confused

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A．come across	B．care about
C．look for	D．focus upon

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Had she __________ her promise, she would have made it to Yale University.

A．looked up to	B．lived up to
C．kept up with	D．come up with

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A．absolutely	B．sharply
C．narrowly	D．automatically

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A．nearly	B．slightly
C．narrowly	D．lightly

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Sorry, I have to __________ now. It's time for class.
-OK, I'll call back later.

A．hang up	B．break up
C．give up	D．hold up

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