Ⅰ.单词拼写
1．Before the rain, there was a mass of clouds.
2．He threw it forward with all his strength.
3．She married an American man and became a US citizen.
4．I read a frightening story which took place in a haunted (闹鬼的) house.
5．Hurricane has been forecast for tomorrow afternoon.
6．I am unable to cycle to school because my bicycle is broken.
7．During his election campaign (活动) he promised to put the economy back on its feet.
8．Producing a dictionary is a slow process (过程)．
9．A sandstorm (沙尘暴) kicked up while we drove through the desert.
10．A third of Africa is under threat of desertification (沙漠化)．
