词语运用 根据句意首字母及所给提示,补全单词或用单词、固定短语的正确形式填空。 group by yourself help play happen 1. Please do a role- play in ____ __, children. 2. Children , please do your homework______ . 3. I will try my best_____ _ you with your English. 4. Do you know Yao Ming is a great __ ____? 5. What _____ _ to you? You look worried.四张质地相同的卡片如图所示. 将卡片洗匀后,背面朝上放置在桌面上.【小题1】求随机抽取一张卡片,恰好得到数字2的概率;【小题2】小贝和小晶想用以上四张卡片做游戏,游戏规则见信息图.你认为这个游戏公平吗?请用列表法或画树状图法说明理由,若认为不公平,请你修改规则,使游戏变得公平.