I.单词，短语拼写（满分30分）
A) 用所给单词的适当形式填空：（每小题1.5分；满分15分）
1.We finally came to an _________ (agree) : I would cook and Ann would clean .
2.Scientists have a firm _______ (believe) that there must be lives on Mars .
3. ________ (general) speaking , women live longer than men .
4. The twenty-six countries ________ ( sign ) an agreement to cut air pollution .
5. Her father is a _________ (music) and he is going to hold a concert on Sunday
evening .
