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1.

(+) He wrote a book.

(-) He didn't write a book.

(?) Did he write a book?

2.

(+) They built a new house.

(-) They didn't build a new house.

(?) Did they build a new house?

#NamN

17 tháng 2 2020

1.(-) He didn't write a book.

   (?) Did he write a book?

2. (?) Did they build a new house?

     (+) They built a new house.