41. I saw the boy l                 for his key when I left the classroom.

42. Just now I saw the sun r                 in the east.

43. Yesterday I saw Bob f                 a kite in the park.

44. I saw him p                 football this time yesterday.

45. I see a book l                 on the floor. Then I pick it up (捡起来).

46. I saw some students r                 out of the classroom after class.

47. Can you hear someone k                 at the window, Lily?

48. We could hear the girls s                 songs in the next room.

49. I lost my purse. The little boy saw someone s                 it but I didn't notice.

50. While I was walking along the lake, I saw some fish j                 out of the water.

51. If you feel n                 before the interview, you should talk to your parents.

52. It sounded r                 that the earth was the center of the universe many years ago.

53. The scarf on the left feels hard, but the one on the right feels s                .

54. You should exercise more so as to keep e                .

55. Rose smells so w                .

56. I'm feeling t                . I cough day and night.

57. You put too much salt in the soup. It tastes so s                .

58. The pandas in the zoo are taken good care of (好好照顾), so they never(从不) go h                .

59. Mother got very a                 when she saw Jim's bad grades.

60. My father likes walking in the evening, he wants to stay h                .