rewrite each sentence so that it contains a modal auxiliary and so that the meaning stays the same.
1. the police refused to do anything about my noisy neighbor.
2. why didn't you back me up.
3. our worrying so much was a waste of time.
4. George knew how to ride a bicycle when he was five.
5. it would have been possible for Helen to give us a lift.
6. school uniform wasn't compulsory at my school.
Loga
Sinh Học lớp 12
