He was about to do something when his mother suddenly shouted out.
He was doing something when his mother suddenly shouted out.He refused to do something about his mother suddenly shouting out.He was on the point of doing something when his mother suddenly shouted out.His mother's sudden shouting out helped him to do something.Hướng dẫn giải:Dịch nghĩa: Anh đang trên đường làm gì đó thì mẹ anh đột nhiên hét lên.
