1.   At one point in the interview Gorbachev admitted he had made serious mistakes.

2.   Estall has made a serious mistake that could prove his undoing.

3.   For example, a literal translation by some one not familiar with its deeper cultural meaning May result in serious mistakes.

4.   I also learned that it is a serious mistake to equate pentecostals with fundamentalists.

5.   The Decision to take the money was a serious mistake.

6.   There was a serious mistake in the instructions.

7.   This proved to be a serious mistake.

8.   This would count as a very serious mistake in spoken language interpreting.

9.   Yet, this is a serious mistake.