Jawaban:

1. (-)Me and my friends didn't watch a film last night.

  (?)What did we watch last night?

2.(-) Mother didn't cook meat two days ago.

  (?) What did mother cook two days ago?

3.(-) My sister didn't bought a new H.P a week ago.

  (?) What did she bought a week ago?

4.(-) The student didn't clean their class this morning.

  (?) Did the student clean their class this morning?

5.(-) My friend didn't sited My house last Sunday.

  (?) Did my friend sited My house last Sunday?

6.(-) Me and friends didn't came to our teacher's house yesterday.

  (?) Did we came to our teacher's house yesterday?

7.(-) My family didn't went to Bandung City last month.

  (?) Did my family went to Bandung City last month?

8.(-) We didn't study English last night.

  (?) Did we study English last night?

9.(-) My friend weren't at school playing volly ball last Sunday.

  (?) Did my friend were art school playing volly ball last Sunday?

10.(-) We weren't naughty when we were a child.

   (?) Were we naughty when we were a child?

Rumus past tense :

*S + V2 + O

*S + was/were + V1 + O