If you ______ talk about it with me, please wait till I finish my work at hand.

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

---Is John coming by train?    ---He should, but he ________ not. He likes driving his car.

No person _______ carry a mobile phone into the examination room during the national college Entrance Examinations. 

— Who is absent from the lecture today? —_____________you ask? Peter, of course.