题目内容：

改错：从A、B、C、D四个选项中，找出一处错误的选项，并在其后的横线上写出正确答案

1.The problem[A]being discussed[B]at the meeting[C]is of great[D]important.

__________应为______________

2.They think[A]this their study[B]to meet the[C]needs of[D]customers,__________应为______________

3.[A]Only when his hometown[B]was liberated in 1949，[C]he was able to go to[D]school.

__________应为______________

4.The Englishman[A]speaks Chinese[B]as though he[C]is a[D]Chinese__________应为______________

5.[A]Seeing from the top of the hill, the city[B]looks[C]much more[D]beautiful.

__________应为______________