80．我想知道你什么时候会回来。

79．你找到了上周丢的那本书了吗?

78．为什么不让孩子们再睡会儿?

____________________________________ a little longer?

77．红灯亮了，所以他停下了车。

The traffic light turned red,____________________________________________.

　 根据所给汉语句子完成英语句子，词数不限。

76．他每天练习说英语。

73. _______　 74. _______　 75.

　　 用括号里所给动词的适当形式填空。　

请将答案填写在短文后面的横线上。

　　 Many scientists say that the world is getting hotter and hotter. If they are right, the ice at the North and South Poles will melt(融化) eventually. If this 　69 (happen), the sea will rise and may cover most or all of Singapore. This 　70 　(force) everybody to move to a safer country.

　　 We know that the sun 　71　 　(heat) the earth. The heat from the sun hits the ground, and some of it goes back into the sky. However, factories and vehicles(车辆) produce a lot of harmful gases. When the gases rise into the sky, heat from the sun can come through them but heat from the ground cannot. It stays near us in the sky and makes the air hotter and hotter every year.

　　 Scientists call this the "greenhouse effect" because a greenhouse is a small glass building which is hot inside. It 　72 　(use) for growing plants in cool countries. Many countries are worried about the greenhouse effect. They 　73 　(try) to stop factories and vehicles from _74_　 (send) harmful gases into the sky. Scientists are not sure when the world will get much hotter. Some people say that the greenhouse effect 　75 　(start) already and has begun to affect the world's weather.

69._______　 70. _______　 71. _______　 72. _______

68. He had an exciting__________ / Iks′pI∂rI∂ns/in Japan last year.

67. The pandas live happily in the __________ (自然) reserve.

66. Don't ask foreigners________ / p∂:s∂n∂l/questions.