根据句意及汉语提示完成单词
①It's i____ to smoke in some indoor public space and special outdoor work space.
②The teacher came in while Tom was d____ litter on the floor.
③Please be c____ next time. Don't make the same mistakes again.
④The English program can s____ ways for us to take an interest in learning English.
⑤If you study hard, you can make great p____.
是
所在平面内一定点，动点
满足
，
，则动点