下列句子中加粗的词语运用不恰当的一项是（ ）

Don’t get off the bus ____ it stops.

There will be a football match this afternoon in our school. ——________.

–When will you come home for dinner I will prepare itfor you–Don’t ______it I’ll eat out with my friends

The Bakers intend to buy a house but _____ must be within their power.