精选优质文档-倾情为你奉上新概念一语法练习卷答案 一、选择题练习 C 1. Who _ over there now? A. singing B. are sing C. is singing D. sing D 2. Its eight oclock. The students _ an English class. A. have B. having C. is having D. are having C 3. Listen! The baby _ in the next room. A. crying B. cried C. is crying D. cries A 4. Look! The twins _ new sweaters. A. are wearing B. wearing C. are wear D. is wearing B5. Dont talk here. Grandparents _. A. is s