Sửa lỗi sai :
1. When the bus was arriving , we missed it because we were talking .
=>
2. You don't have to press this button because it is very dangerous
=>
3 . During the Christmas holiday , she was eating too much and watching TV too much .
=>
4. The dragon flew over the tower when he heard the princess cry for help
=>
1. When the bus was arriving , we missed it because we were talking .
=> was arriving => arrived
2. You don't have to press this button because it is very dangerous
=> don't have to => mustn't
3 . During the Christmas holiday,she was eating too much and watching TV too much
=> Was eating => ate ; watching => watched
4. The dragon flew over the tower when he heard the princess cry for help
=> flew => was flying
1. When the bus was arriving , we missed it because we were talking .
=> was arriving => arrived
2. You don't have to press this button because it is very dangerous
=> don't have to => mustn't
3 . During the Christmas holiday , she was eating too much and watching TV too much .
=> bỏ too much
4. The dragon flew over the tower when he heard the princess cry for help
=> flew => was flying