The market for ______ used computers is getting larger and larger as______ years go on.
I don't think ___ possible to master a foreogn language without much momory work.
Don't shout at the old man.They should ____.
Does ___ matter if he can't finish the job on time?
---Well, it’s too late.I have to go. ---OK.____!
He’s rather walk than ___ a bus in the rush hour.