问题

Heavy smog blankets Beijing．,city authorities start using its new smog warning system

A:In turn
B:In time
C:In response
D:In return

正确答案是：

同类题型

Is it time_______ supper – Yes. It’s time for us_______ have supper.

Is that your friend— ______________.

But for the metal cage to pull the miners to safety, the miners in Chile ____ in less than twenty-four hours.

As time _________,we know each other better.

What would you like ______ for supper.