55. Sandy has good grades in English and ______(地理).

54. They helped each other ______(高兴)during the trip.

53. ______(三明治)are my favorite food.

52. The sun shines______(透过)the windows.

51. My aunt lives on the ______(十九)floor but she climbs stairs every day.

50. She is ill, so she feels very w______ and can't stand up.

49.¨I didn't hear what you said. Can you r______ it?" asked Lucy.

48. You should not p______ the cat's tail. It will bite you.

47. He stopped his work and l______ carefully but he didn't hear anything.

46. －Tom, do you hear Millie c______ in the bedroom at this moment?

　　 －Yes. She must be very sad.