1.

(-)Nam didn't write an essay in literature class this morning.

(?)Did Nam write an essay in literature class this morning?

2. 

(-)I didn't watch tv yesterday morning.

(?)Did you watch tv yesterday morning?

3.

(-)Nam and you weren't in the english club last Tuesday.

(?)Were Nam and you in the english club last Tuesday?

4.

(-)They didn't eat noodles two hours ago.

(?)Did they eat noodles two hours ago?

5.

(-)We didn't always have a nice time on Christmas holiday in the past.

(?)Did you always have a nice time on Christmas holiday in the past?

6. 

(-)My father didn't decorated the Christmas tree 

(?)Did your father decorated the Christmas tree?

7.

(-)She didn't buy a new dress yesterday.

(?)Did she buy a new dress yesterday?

8.

(-)They weren't late at school.

(?) Were they late at school?

9.

(-)Mr.Tam didn't take his children to the museum last Sunday.

(?)Did mr.Tam take his children to the museum last Sunday?

10.

(-)Hoa didn't make a cushion for her armchair.

(?) Did Hoa make a cushion for her airmchair?

Chúc bạn học tốt^_^

1/ nam didn't wrote an essay in literature class this morning

did nam wrote an essay  in literature class this moring ?

2/I didn't  watched tv yesterday morning

did I watched tv yesterday morning?

3/Nam and you were not  in the english club last Tuesday

were Nam and you  in the english club last Tuesday?

4they didn't ate noodles two hours ago

did they ate noodles two hours ago?

5/we didn't always had a nice time on Christmas holiday in the past.

did we always had a nice time on Christmas holiday in the past.?

6/my father doesn't  decorated the Christmas tree

does my father decorated the Christmas tree?

7.she didn't bought a new dress yesterday.

did she bought a new dress yesterday ?