Everyone was trying to behave _____________(有礼貌地).
We can’t stop the _____________ (自然的) disasters happening.
Taking a short rest at noon is good for your body and ______________(头脑).
It’s very dangerous to go ________(穿过) the street when the traffic light is red.
In Western culture, “Black ____________(星期五)”, sometimes represents an unlucky day.
The more careful you are, the ____________(少的) mistakes you will make.
