用括号内所给单词的适当形式填空。 1.________(keep) quiet in the library. 2.Don't ________(swim) in the river,please. 3.Please don't ________(be) late for school next time. 4.
任务型阅读 (1)Da Shan, a Canadian, is perhaps China’s most famous foreigner. He speaks Chinese well. He was born in 1965. He(2)started to learn Chinese when he studied at Toronto U