五种时态练习题一、选择题练习1. Who _ over there now? A. singing B. are sing C. is singing D. sing2. Its eight oclock. The students _an English class. A. have B. having C. is having D. are having3. Listen! The baby _ in the next room. A. crying B. cried C. is crying D. cries4. Dont talk here. Grandparents _. A. is sleeping B. are sleeping C. sleeping D. sleep6. Who _ English best in your class? A. speak B. speaks C. speaking8. Mrs Read