Viết lại câu sao cho nghĩa ko đổi:
1: I regret not buying any tickets for the concert
I wish......................................................................
2: I haven't decided to continue my study in a foreign country
I haven't made......................................................
3: He was a fool to say that
It was..................................................
4: Fiona was so disappointed that she could not keep on working
Such.....................................................................
5: I only recognized him when he came into the room
It was...........................................................
6: Thanks to Lan's help, I was able to finish the project
Had..............................