Is there any possible way to help them get rid of such a bad habit?--- To tell the truth, it’s very hard. But we on this problem trying to improve the situation.
23. Wang Mei is one of many Chinese teenagers _____ “on the go”
35. He was born ____ a very cold night _____ December.
34. When he knocked at the door, my mother was busy ____ supper.
33. He waited until it was dark ____ nobody could see him clearly.
31. We should think of ways to stop the waste from the factory _____ our living environment.