Scientistsanddoctorsacrossthew

Scientists and doctors across the world have done _____ research over the years, hoping to find a cure for cancer.

A．a great deal of	B．quantity of
C．quite a few	D．a large number of

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相关试题

—ou___________ stop me.
—Even if you __________it, I won't allow you to swim across the river.

A．mustn't; dare not do	B．may ; dare not do
C．can; dare to do	D．needn't; dare do

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He__________ he would be able to leave tomorrow, but it's beginning to took difficult.

A．hopes

B．was hoping

C．had hoped

D．hoped

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—I put him down for a well-educated man.
—___________ ?
—I mean that he's a well-educated man.

A．I beg your pardon	B．Speak louder, will you
C．What's that	D．Will you repeat word for word

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You____________ television. Why not do something more active?

A．always watch	B．too small a car
C．have always watched	D．have always been watching

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Peter won't drive us to the station. He has___________ to take us all.

A．a very small car	B．too small a car
C．a too small car	D．such a small car

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