Who cleaned the room yesterday – I .

_______parents say and do has a life-long effect on their children.

“Never for a second，”the boy says，“________that my father would come to my rescue.” (2013·江苏，27)

I’d like to start my own business–that’s ________ I’d do if I had the money.(2011·陕西)

Middle school students _________ smoke because it is bad for their health.