下列关于脊椎动物的叙述不正确的是（　　）

—I usually ______ to work.

完形填空。

      Li Lin is a good friend of mine. I go to 1 home for dinner. Zhang Tao and Wang Dong are 2at his home. We 3 a good dinner. There is 4 chicken, fish, milk and vegetables 5 the table. And there 6 some rice, noodles, cakes, water and tea on it, too. We like 7 very much. Li Lin and I like 8 meat, fish, noodles and cakes. Zhang Tao and Wang Dong like to eat chicken, fish and 9.They are really (确实地) nice. 10 are very happy.

在学习了电和磁的知识后，小杰在家里饶有兴趣地做起了小实验．他找了一枚缝衣针，在“吸铁石”上擦了几下，然后用一根细软的棉线将缝衣针悬挂起来并保持水平，结果发现静止后针尖总是指向南方，这说明缝衣针已经被____ 成了一枚小磁针，此时缝衣针的针尖是　____ 　极．（填“S”或“N”）

After the education reform(改革) in Jiangsu Province, the pupils have_______ time to relax and _______  homework to do.