You shouldn't （) your time like that, Bob; you have to finish your school work t

A.aren't you

B.shouldn't you

C.wouldn't you

D.don't you

You shouldn't joke with him, since he is a ______ (change)person．

A.hadn’t you

B.shouldn’t you

C.didn’t you

D.wouldn’t you

John, you ______ play with the knife, you ______ hurt yourself.

A) won't; can't B) mustn't; may

C) shouldn't; must D) can't; shouldn't

A.But you shouldn't.

B.But you needn't

C.But you mustn't

D.But you wouldn't

A.didn' t you

B.shouldn' t you

C.couldn’t you

D.hadn .t you