（1）你看起来很不高兴。发生什么事了？

  You look very unhappy. What you?

（2）快一点，飞机半个小时后就起飞了。

  Hurry up! The plane will in half an hour.

（3）她很高兴照顾那个小孩，因为她非常喜欢孩子。

  She look after the kid, because she likes kids very  much.

（4）在昨天的聚会上，Alice为客人们跳了舞。

  Alice the guests at the party yesterday.

（1） knife (复数)                

（2）receive (第三人称单数)          

（3）damage (现在分词)       

（4）spread (过去分词)    

（5）explain (名词)              

假设有外星人存在，请你根据以下提示写一篇短文，想象外星人的样子和他们的生活。要求80词左右，可适当发挥。开头已给出，不计入总词数。

内容提示：  

①外星人生活在其他星球上，他们长着大大的头，有一双大大的眼睛，个子很小；

②他们看似弱小，实际很强壮，他们不需要喝水，不需要呼吸，也不需要睡觉；

③与人类不同的是，他们总是乘着UFO去他们想去的地方。

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或者使用括号中词语的正确形式填空。

    Over millions of years ago, there were deserts. Now about one fifth of the Earth's surface  (be) deserts. The size of the world's deserts is always  (change). Deserts can be hot or cold. The Australian Desert is a hot desert, while the Gobi Desert in Mongolia is an example of a cold desert. Deserts are dry areas less than 50 cm of rain falls each year. The Sahara Desert in Africa receives less than 1.5 cm a year. rain doesn't fall very often in deserts, sometimes even for years, there can be heavy rain (sudden). Because they are dry, deserts have wide changes in temperature each day. When the sun  (go) up, it is very hot. At night, the heat  (receive) by the ground during the day  (quick) disappears(消失), and then it becomes very cold. Because  the change, living in the desert is very difficult. Man can make deserts, but they can also stop them from getting larger and larger. Planting trees can prevent the sand from  (spread).

①尽快      

②in fear     

③agree with  

④保持安静  

⑤降落场