Allthatcanbedone.A．hasbeendone

All that can be done _______.

A．has been done

B．has done

C．have done

D．were done

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A．seating

B．seat

C．seated

D．to seat

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— We_____trees. Why not join us？

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A．isnt heard of	B．wasn’t heard of
C．hasn’t been heard of	D．hadn’t been heard of

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A．should

B．must

C．would

D．could

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A．If

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