Viết lại các câu sau và thêm động từ khuyết thiếu cho sẵn vào vị trí thích hợp.1) If you go swimming in the sea, you wear a life jacket. (ought to)2) I will tell you my secret, but you tell anyone. (mustn't)3) You spend too much time playing computer games. You stop that. (must)4) We wear helmets when we ride a motorbike. (have to)5) I book the tickets in advance. (don't have to)6) We play table tennis. We can play chess instead. (don't have...
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Viết lại các câu sau và thêm động từ khuyết thiếu cho sẵn vào vị trí thích hợp.
1) If you go swimming in the sea, you wear a life jacket. (ought to)
2) I will tell you my secret, but you tell anyone. (mustn't)
3) You spend too much time playing computer games. You stop that. (must)
4) We wear helmets when we ride a motorbike. (have to)
5) I book the tickets in advance. (don't have to)
6) We play table tennis. We can play chess instead. (don't have to)
7) Children put their hands into sockets. That is very dangerous. (mustn't)
8) Doctors sometimes work at the weekends and on national holidays. (have to)
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1) If you go swimming in the sea ,you ought to wear a life jacket
2)I wil tell you my secret,but you mustn't tell anyone
3)You spend too much time playing computer games.You must stop that
4)We have to wear helmets when we ride a motorbike
5)I don't have to book the kets in advance
6)We don't have to play the table tennis.We can play chess instead
7)Children mustn't put their hands into sockets.That is very dangerous
8)Doctors sometimes have to work at the weekends and on national holidays