Jawaban:

(+) Yesterday I washed my sister’s bike.

(-) Yesterday I did not wash my sister’s bike.

(?) Did I wash my sister’s bike yesterday?

(+) Two days ago I cooked fried rice for mom.

(-) Two days ago I did not cook fried rice for my mom.

(?) Did I cook fried rice for my mom two days ago?

(+) Last night I had dinner with my brother.

(-) Last night I did not have dinner with my brother.

(?) Did I have dinner with my brother last night?

(+) Last week I watered the flowers in the garden.

(-) Last week I did not water the flowers in the garden.

(?) Did I water the flowers in the garden last week?

Penjelasan:

Kalimat-kalimat tersebut menggunakan kata kerja lampau, sehingga bentuk negatifnya adalah did not atau bisa disingkat sebagai didn’t, dan bentuk pertanyaannya adalah did I, did you, did he, dan lain sebagainya.