－Is that Mary?－No, it _______be her. She has gone to Tokyo. 

—Why don’t you wear your jogging shorts, mum?—Well, my legs are too skinny, if you ______ know. 

I ______have come here in time, but I met an old friend of mine. I stopped and talked with him for some time.

----I missed the first part of the film. It was really a pity．----You _____home half an hour earlier.

-- What’s wrong with your pen?-- The ink ___________ come out.