---Must we donate our pocket money to the poor right now?---No, you _______. You can think it over and do it before Friday.

(2010·北京高考)—Good morning. I've got an appointment with Miss Smith in the Personnel Department.—Ah, good morning. You ________ be Mrs. Peters.

It is beyond my understanding that many adults ________ be so crazy about Harry Potter series.

 --- Do we have to hand in our research reports this afternoon, Professor Smith?--- Yes, you _______ . I will be waiting to check them all the afternoon.

I __________use a clock to wake me up because at six o'clock each morning the train comes by my house.