—Ithinktreestwiceaweekinsuchho

—I think trees ____________ twice a week in such hot weather.
—Yes, I agree. Or they may die without water.

A．must water.	B．are watered.
C．must be planted.	D．must be watered.

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A．one；one

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D．one；it

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A．shout

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A．isn’t

B．aren’t

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A．at

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