Câu 21 : Children in the past usually played traditionalgames. A.usually in the past used to play traditional games children. B.Children in the past used to play traditional games. C.Children usually play traditional games in the past. D.Children played traditional games used to in the past Câu 22:.We must put dangerous objects in higher places so that children can not reach them. A.We must keep dangerous objects out of children’s reach B.We must keep dangerous objects in of children’s reach. C.We must keep dangerous objects out of children reach D.We can keep dangerous objects out of children’s reach. Câu 23 .Students don’t have to study online on Sundays. A.Students mustn’t study online on Sundays. B.Students shouldn’t study online on Sundays. C.Students can not study online on Sundays. D.Students don’t need to study online on Sundays. Câu 24: I often get up early. a..I am used to get up early. B. I can get up early. C. I am used to getting up early. D.I like to get up early. Câu 25 .I usually spend 20 minutes riding my bike to school. A.It usually takes me 20 minutes to go to school by bike. B.I never go to school by bike. C.It usually takes me 20 minutes to ride to school. D. A and C are correct. Câu 26. It is necessary for everyone to learn English today A.Everyone should learn English today. B.Everyone has to learn English today. C.Everyone doesn’t have to learn English today. D.Everyone wants to learn English today. Câu 27 .There wasn’t any electricity on the farm before. A.There used to be electricity on the farm before. B.There didn’t use to be electricity on the farm. C.We didn’t have any electricity on the farm before. D.B & C are correct. Câu 28 .Thank / letter // A.Thank you of your letter. B.Thank for your letter. C.Thank you for letter. D.Thank you for your letter. Câu 29 .Group 2 /help / clean /street / our school // A.Group 2 will helps to clean the streets near our school. B.Group2 will help to clean the streets near to our school. C.Group 2 will help to lean the streets near our school. D.Group 2 help to clean the streets near our school. Câu 30 Speaking English fluently is not easy. A.It is not easy to speak English English fluently. B.It is easy to speak English fluently. C.It is not difficult to speak English fluently. To speak English fluently isn’t difficult. Giúp em vs mnn