The man is going to buy a big house when he _________ more money.

Where _______ the 2008 Olympic Games _______?.－You don’t know? Beijing!

This is not an economical way to get more water; ____, it is very expensive.

_________ the people lost their lives in the traffic accident.

I think trees ____________ twice a week in such hot weather.—Yes, I agree. Or they may die without water.