47. A. As B. When C. Since D. While
46. A. carefully B. seriously C. nervously D. anxiously(焦急的)
45. A. understanding B. the parents C. the teacher D. his classmates
44. A. listening to B. looking at C. hearing D. watching
43. A. surprised B. sad C. happy D. embarrassed(尴尬)
42. A. impressed B. surprised C. excited D. comforted
41. A. talk about B. think about C. care about D. hear about
40. A. included B. passed C. covered D. decorated
39.A. look B. appearance C. clothes D. smile
38. A. noticed B. greeted C. accepted D. met