71. I saw her   (teach) some children to sing a song when I passed by yesterday.

70. You have to do all the exercises before you open the  (宝藏) box.

69. This young nurse can look after these  (患病的) people very well.

68. Yesterday David helped me to fix my  (损坏的) computer.

67. You can't play with  (火柴) . They are very dangerous.

66. Look!The white  (老鼠) in the cage look quite lovely.

65. 这双鞋子看上去很漂亮，我想试穿一下

This pair of shoes  . I want to   .

64. 昨天在我们去公园的路上，我们玩得很开心。

On our way to the park,we   yesterday.

63. 现在中国大部分家庭至少有两台电视。

Now in China,most families have   two TV sets.

62. 我们正盼望着收到你的来信。

We are looking forward to   you.