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---Must I hand in my exercise book now, Mr. Zhao?

---No, you ______. You may give it to me tomorrow.

A．mustn’t          B．can’t            C．needn’t         D．don’t

---Must I hand in my exercise book now, Mr. Zhao?
---No, you ______. You may give it to me tomorrow.

----Must I hand in our homework today?
--- No, you ______.

----Must I hand in our homework today?

--- No, you ______.

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

--- Must I hand in my report now?

   --- No, you ________. You still have some time.

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