I want to ask Mrs Anders if she wouldlike to join our dance. —______

(2013·高考湖南卷)Do not let any failures discourage you，for you can never tell________close you may be to victory.

My calculations were based on the ________ that houseprices would remain steady.

Didn’t you tell Harry not to play games so muchI said to him goes in one ear and out the other.

It is time for class. Let’s stop _______.