$1$. Not until I locked the room did I realize that I hadn't turn off the cooker
$2$. Speeding in the city is forbidden by the law
⇒ Câu bị động
$3$. Sửa đề: No one else in the class is as good at chess as tim is (best)
⇒ Tim is the best person at chess in the class
4. When did you take up playing badminton?
⇒ take up: bắt đầu sở thích
@`text{HYen}`
#`text{Sếu}`