Stop smoking, Joe! You _____ yourself if you keep on doing it like that!

下列各句中，加横线的成语使用错误的一项是

I am used to ________ my hair in the morning.

The research on the new flu virus vaccine ischallenging and demanding Who do you think can do thejob— ____ my students have a try

rgot your purse when you went out——Good heavens, _________