Folk music can usually ______ senior citizensbecause of their experiences.

Parents are supposed to monitor their children on the Internet, in case some bad information would teenagers’ mind.

________ I had worked for ten hours, I was tired out

The subject of "What is interesting isthat I do not even know him" is_______

Eating and drinking on Beijing subway is not allowed. If you the rule, you’ll face a fine (罚款) of up to 500 yuan.