90.You can’t do your exercise ______ pencil.You must do it _

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90.You can’t do your exercise ______ pencil.You must do it ______ a pen.A.with---in B.with
90.You can’t do your exercise ______ pencil.You must do it ______ a pen.
A.with---in B.with---with C.in---with D.in---in

C.in---with
in pencil 用铅笔
with a pen用钢笔

90.You can’t do your exercise ______ pencil.You must do it _ You can't do your exercises__pencil,you must do it__a pen l can't ( )my pencil.do you know ()they are?( )they in your “Must we do it now?” “Yes,you ______.A.can B.must C.may ______(do exercise）can help you stay healthy You must do your work now(同义句）It is ______ for you to do you You must go home now ,_____ ______?You needn't do it ,_____ you'd better _(do) more exercise you can do it ______.(自己) W--------- you do,you must put your heart into it. Nobody can help you,you must do it by ( ) ,Jane. You must keep your eyes( )when you do eye exercise.A.close B