1.The magazines( )to the library in two weeks

1.The magazines( )to the library in two weeks
A.must return
B.must be returned
C.returned
D.must be returning
2.To make our city more beautiful,rubbish( )into the river
A.needn't be thrown
B.mustn't be thrown
C.can't throw
D.may be rhrow
3.Don't worry.All the children( )by the nurse
A.are well taken care of
B.take good care of
C.are taken good care
D.take good care
4.The old man was quite weak after the accident,so he( ).
A.must be take care of
B.must take care of
C.must be looked after
D.must look after