What kinds of accidents do you know of?

what kinds of accidents do you know of?中的最后的 of 起什么作用? What kinds of accidents do you know of?为什么后面有个of? What kinds of accident do you know of? what kinds of movies do you like? you,what,music,of,do,like,kinds 求修改语法病句!Do you know what kinds of skills you have to develop How many kinds of energy do you know?what are they? 1.What kinds of people do you prefer to meet or know?口语考试 what are the kinds of parties you know about?_______________ How many kinds of flowers do you know?的回答 Do you know there are two kinds of football game? WHAT KINDS OF QUESTIONS DO YOU WHAT TO ASK?