题目内容：

词形变换

1.organize（名词）________

2.advise(名词)___________

3.meet(名词)_____________

4.video（复数）___________

5.certain（副词）_________

6.careful（反义词）_________

7.he（反身代词）__________

8.solve（名词）___________

9.they（反身代词）__________

10.understand（形容词）_________