—Have you been watching TV? Don’t        valuable time running.—I’m not. I’m tired now and only am taking a short break.

My uncle hasn't been able to quit smoking, but at least he has_____ 

There is no doubt_______ English is the widely used language all over the world.

(2012·安徽高考)Grace doesn't want to move to New York because she thinks if she ________ there, she wouldn't be able to see her parents very often.

It is said that the weather will ______ hot for another three or four days.