Newlightmaybethecauseofcancerb

New light may be the cause of cancer by research that is now in progress．

A．thrown

B．thrown off

C．thrown on

D．thrown by

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—Here you are at last! What kept you so long?
—Sorry, I’m late. But do you know what great difficulty I have ______ your house.

A．found

B．finding

C．to find

D．for finding

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_______ to be much chance of our catching him up in the near future.

A．You don’t seem	B．It doesn’t seem
C．That doesn’t seem	D．There doesn’t seem

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A．made it convenient for	B．made it convenient
C．made convenient	D．made it convenient to

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When _____ his view about his job as a teacher, Mike said he found it very interesting and rewarding.

A．asking

B．asked

C．having asked

D．to be asked

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What impressed the visitors deeply was ______ the workers made with their hands.

A．what

B．that

C．how

D．which

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