1. Yesterday, she went shopping, then she visited me.
→ Yesterday, before she visited me, she had gone shopping.
2. Someone had stole my car before I wake up.
→ My car had been stolen before I wake up.
3. My homework is long and difficult, I can't finish it on time.
→ If my homework weren't long and difficult, I could finish it on time.
4. I can not come because I have to help my dad with something.
→ If I didn't have to help my dad with something, I could come.
< Có gì sai thì nói mk sửa nhé ạ >