—Is Tom still smoking? —No．By next Saturday he _____________ for a whole month without smoking a single cigarette.

The roads have ______ because of people’s dependence on cars.

When he  _______ the door, he found his keys were nowhere.            

—Haven't seen you for ages! Where have you been? —I went to Ningxia and    there for one year, teaching as a volunteer. 

—I haven’t seen my close friend John lately,and I wonder how things go with him?—I _____him the other day,he said he worked in a candy store.