Đặt câu hỏi cho từ gạch chân :
1: there are 40 students in my classroom . ...........................
2:my family usually goes to DaLat on summer vacation . ................................
3.the show lasts two hours and a half..
.........................
1.How many students are there in your classroom?
2.Where does your family usually go to on summer vacation?
3.ko có từ gạch chân
3 : the show lasts two hours and a half. .....................