38.When he runs (　　　　 )(　　　 )his money,he will ask his mother (　　　 )it.

37.Our classmates all take part (　　　 ) after-class clubs.

36.He complains (　　　 )his mother (　　　 )his burden of homework.

34.He studies (　　　　 )home (　　　　 )computers.

33.They are raising money (　　　 )charity.

32.Our class is playing (　　　　　 )Class Two now.

31.(　　　 )doing sports,he keeps (　　 )good health.

30. The top of moutain is 6000 meters (　　　 )the sea level.

28. I’m sure that he will get (　　　 ) the difficulty at present.

27.We teachers should open (　　　 )the　 students’s eyes (　　　 )the outside world.