Don’t you know this is a problem that ________ even experts?A．asksB．beatsC．hitsD

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Don’t you know this is a problem that ________ even experts?

A．asks	B．beats
C．hits	D．meets

答案

举一反三

Great efforts must be ________ in order to improve your spoken English.

A．made	B．tried
C．had	D．put

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—Don’t have yourself ________ there. Come and help me.
—Where would you like to have the table ________ ?

A．sitting; laid	B．sitting; lain
C．seating; lying	D．seating; lain

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We can’t ________ the car. There ________ something wrong with the engine.

A．drive; must be	B．start; must be.
C．start; has	D．begin; must have

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After hospitals buy expensive equipment, they must try to ________ the money they have spent.

A．recover	B．reduce
C．remove	D．receive

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Beyond the lake _____ quantities of birds coming from the North every winter.

A．flies

B．flying

C．flied

D．fly

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