Answer:

1)

(+) I went to Jogjakarta with my friends last week

(-) I did not (didn't) go to Jogjakarta with my friends last week

(?) Did I go to Jogjakarta with my friends last week?

2)

(+) Dion won the speech contest in his school two days ago

(-) Dion did not (didn't) win the speech contest in his school two days ago

(?) Did Dion win the speech contest in his school two days ago?

3)

(+) Sinta and Sindi were at the school library yesterday afternoon

(-) Sinta and Santi were not (weren't) at the school library yesterday afternoon

(?) Were Sinta and Santi at the school library yesterday?

4)

(+) He sent a letter to his friends last Sunday

(-) He did not (didn't) send a letter to his friends last Sunday

(?) Did he send a letter to his friends last Sunday?

5)

(+) My mother cooked fried rice for my birthday party last month

(-) My mother did not (didn't) cook fried rice for my birthday party last month

(?) Did my mother cook fried rice for my birthday party last month?

6)

(+) Our futsal team joined the futsal tournament

(-) Our futsal team did not (didn't) join the futsal tournament

(?) Did our futsal team join the futsal tournament?

7)

(+) Karina got what she expected from the seminar last week

(-) Karina did not (didn't) get what she expected from the seminar last week

(?) Did Karina get what she expected from the seminar last week

8)

(+) He came to school yesterday

(-) He did not (didn't) come to school yesterday

(?) Did he come to school yesterday?

9)

(+) You paid the tax last year

(-) You did not (didn't) pay the tax last year

(?) Did you pay the tax last year?

10)

(+) I was at home when he came last night

(-) I was not (wasn't) at home when he came last night

(?) Was I at home when he came last night?

11)

(?) What did you buy last Sunday?

12)

(+) You were at Andi's house yesterday

(-) You were not (weren't) at Andi's house yesterday

(?) Were you at Andi's house yesterday?

13)

(?) Where did Doni go last week?

14)

(+) They did the Math exam two days ago

(-) They did not (didn't) do the Math exam two days ago

(?) Did they do the Math exam two days ago?

15)

(+) She was fat

(-) She was not (wasn't) fat

(?) Was she fat?

* nomor 11 dan 13 tidak dapat diubah dalam bentuk postif (+) atau negatif (-), karena hanya dapat merupakan bentuk kalimat interogatif (?)

Past simple tense :

(+) S + V2

(-) S + did not (didn't) + V1

(?) Did + S + V1?

Maaf jika ada yang salah