37. A. now and then B. all the time C. at home D. at work
38. A. tried B. asked C. waited D. invited
39. A. polite B. important C. fine D. special
40. A. condition B. situation C. result D. effect
41. A. frequent B. regular C. unusual D. particular
42. A. friends B. study C. family D. work
43. A. a quick B. a secret C. an expected D. an extra
44. A. hopeful B. delighted C. frightened D. anxious
45. A. forcing B. telling C. giving D. limiting