One of our rules is that every student ________ wear school uniform while at school.(2012·辽宁)

________ you interrupt now? Can’t you see I’m on the phone?_ Sorry, Sir, but it’s urgent.

—Jim，you said you'd lend me your MP5.—I'm sorry I forgot my promise but you ________ have it next Saturday. 

-Hello, _______ I speak to Lily? -Hold on, please.

–– ________ I come back before 6 o’clock?–– No, you _______ . But you ______ be back later than 7 o’clock.