sorry e vt nhầm

I used to ride a bike to school when I was a primary student

I used to watch cartoon when I was 5 years old

He used to smoke

She used to be a student

I used to sent a letter to my friends

mk cũng hok lớp 7 mà mk chưa thấy công thức you to nào cả

ok cho mk 1 vd thử xem ạHtcvt

1 Some things  are bought in the supermarket by my mother

2 Music is being listened by my sister now

3 The restaurant has been gone by my father.