—He must be in the reading-room now. We will find him there.
---No, he _____.Tom said he was ill at home .

I ______ tell you with certainty that he won’t be able to finish it before the deadline.

–Do you think we are going the right way to the Forbidden City? —Sorry, I’m not sure．But it _______ be．

― Why ______ you stay in the countryside, where it’s not convenient to go shopping?
―But I’ve found it rather valuable for my health.

---Must I go to the gym three times a week?
---No, you ______. Twice a week is OK.

--- Amazing ! You _________ wear slippers at work.
--- Don’t you know it’s a fashion ?

. (2010·江西名校模拟) —I’ve heard they went skiing in the mountains last winter.                           
—It ______ true because there was so little snow there then. 

As nobody here knows what is wrong with the machine, we          send for an engineer to handle the problem．

--- Will you take up teaching as a career after graduation?
--- Hard to say. I _______ go abroad for higher education instead.

—Are you going to the concert?
—I’m not sure. I     stay inside and watch it live on TV instead.