青蛙既能在水中生活,又能在陆地生活,所以是两栖动物[ ] 发布时间:2017-04-16 18:49 │ 来源:www.tikuol.com 题型:判断题 问题: 青蛙既能在水中生活,又能在陆地生活,所以是两栖动物[ ]
题型:判断题 All that can be done _____. [ ]a. has done b. has been done c. have doned. have been done 查看答案