_______to strong sunlight for a long time will do harm to our skin. [ ]

I take your order now, sir—_____

Because of the _____ petrol(汽油) price, fewer and fewerpeople will choose to own a car, I think. — I have the same idea asyou.

__________— Beijing Duck, some broccoli, tomato soup, and some rice, please.

Parents should warn their children ______ in the river. It’s dangerous.