11.  You mean sort of an innocuous set of reasons, not really the true reasons you wanted to leave?

12.  Being unacceptable was the true reason why the opposition called for the debate.

13.  No one seems to know the true reason behind the failure of our sportsmen to perform to expectations.

14.  He said it is difficult to guess the true reasons behind such high-profile resignations.

15.  Analysts here say the true reason lies in government concerns that thousands of radical women activists might stage embarrassing protests in Beijing.

16.  Analysts have said the true reason lay in government concerns that thousands of radical women activists might stage embarrassing protests in Beijing.

17.  Analysts here say the true reason lay in government concerns that thousands of radical women activists might stage embarrassing protests in Beijing.

18.  The substitute figures fail to reflect the realities in China, where cheap labour costs are the true reason for low export prices, Zhang said.