--- It’s difficult to get to the other side of the river.--- I think a bridge over the river.
Food safety is important. Rules _____ to stop people from food pollution.
—Why don’t we start a school magazine on line? —________
The sign means _________
--- --Who won _______prize for the “Most Beautiful Nature” photography? ------______18-year-old girl.
------You are leaving for Beijing Please send me a postcard _________ you are there. ------No problem.