The scientists were trying to look for all possible _______ as to where this species came from.

 Do you know _____ we are talking about? Come and I’ll tell you.

Every one of us is free to have our own religious _______.

The police have started an ___ into the cause of the fire which broke out in the hotel last night.

 “China Daily”, whose editorial office is in Beijing, also has _______ in all major cities in China.