54.
1) Did he go to school? Yes, he did
2) Did she have supper? Yes, she did
3) Did they get up at 8 o'clock? Yes, they did
4) Did they give us the book? Yes, they did
5) Did he see Ann at school? Yes, he did
55.
1) He didn't take...
2) We didn't have...
3) He didn't say...
4) They didn't come..
5) She didn't take..