---Helen, will you be at the party tonight?

---Yes, but I really_________ as I have so much homework to do．

       A．can’t                   B．shouldn’t             C．mustn’t               D．won’t

 Johnny, 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

．---Helen, will you be at the party tonight?

---Yes, but I really        as I have so much homework to do．

A．can’t                      B．shouldn’t         C．mustn’t                   D．won’t

A．won’t; can’t

B．mustn’t; may

C．shouldn’t; must

D．can’t; shouldn’t

Johnny, 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