( )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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()yourhomework____byyourselves.A.mustbedoB.mustdoC.mustbedoesD.do()yourhomework____byyourselves.A.mu

( )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
( )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

( )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
C
作业是被做完,应用被动语态.即Be + done

C

四个答案都不正确,正确的应该是must be done.
句子意思是作业必须要自己做,主语是homework,应该是被做,所以动词应该是被动语态。done是do的过去完成时,有表被动的意思。