Câu hỏi của Nguyễn Tạ Khánh Ngọc

1 (-) He didn't write a book (?) Did he write a book ?2 (-) She didn't my boss(?) Did she my boss ? 3(?) Did they build a new house ?(+) They were build a new house .4 (+) I was at the concert last Sunday (?) Was I at the concert last Sunday ? Câu trả lời: 1 (-) He didn't write a book (?) Did he write a book ?2 (-) She didn't my boss(?) Did she my boss ? 3(?) Did they build a new house ?(+) They were build a new house .4 (+) I was at the concert last Sunday (?) Was I at the concert last Sunday ?