No one has yet discovered who is responsible for the incident but the police are already collecting ______．

Chinese Foreign Ministry Spokesman Hong Lei said that China expect to see the vari­ous parties in Afghanistan work together to handle ____ through dialogue and achieve peace in the near future.

（2010·利津模拟）The talk between the two leaders aimed at ending the long _____of war between the two countries.

Those bad conditions have given ______ to a lot of crime in the area.

None of them have regular and        source of income and forced to live below poverty line.