—Please don’t draw on the wall.— .A. It’s very kind of you B. OK, I will C. Sorry, I won’t
He suddenly return ___ a stormy night.
__________! There comes a train!
The car runs ___ a very high speed and directly hits the tree beside the street.
The old man ___ a blue sweater is our new headmaster.
___ the beginning of the meeting, the president made a speech ___ how to reduce pollution.