Fortheenginetowork,thegreenbut

For the engine to work, the green button be in the “on” position.

A．can

B．would

C．must

D．might

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Most Saturday evenings they cook meals ___ open fire outside.

A．in

B．over

C．on

D．above

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A．To wait

B．Have waited

C．Having waited

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The library needs _____,but it’ll have to wait until Friday.

A．cleaning

B．to clean

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---Thanks. You _______ it. I could manage it myself.

A．needn’t do

B．shouldn’t have done

C．mustn’t do

D．needn’t have done

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A．carry out

B．figure out

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D．give out

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