更多精品资料请登录： 资料更新微信：2777464395第一篇：Read and choose.读短文，选择最佳选项补全句子During summer holidays, my good friend Chuanchuan _1_ I went to join a swimming class. Before _2_ only knew how to dog paddle, I like a dog falling into the water and trying to swim.At the swimming class, my teacher told _3_ how to do the crawl. For the crawl we had to breathe on _4_ the left and the right sides. After that, my teacher taught us how to do backstroke. For swimming backstroke,
