( )your homework ____by yourselves.A.must be do B.must do C.must _英语解答

( )your homework ____by yourselves.A.must be do B.must do C.must be does D.do
( )your homework ____by yourselves.A.must be do B.must do C.must be done D.do

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解答

C
作业是被做完,应用被动语态.即Be + done