Don’t lose____,work hard , and you will succeed.

The houses in big cities are very _______. I can’t afford（负担）them.

下列各句中，熟语使用不恰当的一句是 （ ）

下列各组词语中字形有误的一项是（??? ）

Our patients _____ faster recoveries and greater painrelief than patients undergoing open neck and back surgery. And they’re up and_____ around within a few hours of surgery.