31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.

32. When the Chinese delegation arrived at Vienna airport, they were received _____ cheers.

33. The little boy is very clever _____ every subject.

34. Her clothes are very bright _____ colour.

35. Don’t sit _____the corner of the desk. That’s impolite for a student.

36. It is said that the step-mother is very cruel _____ the children.

37. The boy is curious _____ everything. I am sure he is very clever.

38. She is crazy _____ the film star, while her brother is crazy _____ surfing.

39. Once everyone is _____ his life, he will instinctively(本能) find every possible way _____.

40. Let’s put our heads together and decide _____ a plan of action.