It’s true that whoever ____positive for H7N9 will receive free medical treatment from our government without delay

I fell asleep while working on this paper _______ thecomputer on.

Mum,it is nice weather.I want to skate this afternoon.—Don’t you think the ice on the lake is too thin to________your weight?[ ]

Why don’t you wear your jogging shorts, mum?—Well, my legs are too skinny, if you ______ know.

It’s time for us to go to school, so let’s _____ the problem and discuss it later,OK?