Someresearchersbelievethatther

Some researchers believe that there is no doubt ______ a cure for AIDS will be found.

A．which

B．that

C．what

D．whether

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—Li Feng won the first prize in the national English competition.
—Oh，really？I’m glad that her efforts at last________.

A．worked out

B．got back

C．paid off

D．turned out

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She owes her success________good luck more than ________ability.

A．to；and

B．of；to

C．to；to

D．to；in

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Who do you think is the right person to ______the task?

A．undergo

B．undertake

C．understand

D．underline

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While traveling in Sichuan，you can’t miss________people call “The National Treasure”—Giant Panda.

A．that

B．it

C．what

D．which

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—You see，I’m poor in maths，you are not good at English，and...
—That’s________we should help each other.

A．when

B．where

C．how

D．what

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