The 2011 College Entrance Examination has just been over!—-Yes, it will be about two years _____we attend it

What age did you leave home— I left home at 18,Neil.I _____your city for five years.

Once we have________some knowledge, things do not become more difficult, but comprehensible.

Hi, Diana, how was your summer holiday— ! I enjoyed myself in the sea very much.

．Life is too short to waste and too ________ to give up.