—Thepollutionproblemhereseemst

—The pollution problem here seems to get more and more serious.
--Yes. Something_____about it.

A．must do	B．must be done
C．is doing	D．had been done

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---OK, mum. I’ll do it right away.

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A．exciting ; exciting	B．excited ; excited
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A．old enough	B．enough old
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