单元练习

I．根据题意及首宇母提示填空

    1．—Computers are useful inventions and becoming more and more popular．

    ——Yeah．But I think everything has its a_______ and d_________．

    2. At that time the British pound e_______ for $ 1．80．

    3.  It’s good for our health to breathe f________ air．

    4. The t________ of this evening party is r________.

    5. The young boy's mother often tells him to be a b_________ man.

    6.We should train a p________ force to defend our country.

II．句型转换

    1. The Smiths said they would visit Beijing next year,_________ _________? (完成反意疑问句)

    2. I wonder how I can make myself better. (改为同义句)