1．I think playing games every evening is a waste of time—there are more ________ (mean) things to do．
答案：meaningful 句意：我认为每天晚上玩游戏是在浪费时间——还有很多有意义的事情要做。此处应用形容词修饰名词things。意为 “有意义的”， 故填meaningful。
2．At first Robert wouldn't let his daughter go diving, but ________ (eventual) he gave in as she was so confident about her skills．
答案：eventually 句意：起初，罗伯特不愿让他女儿去潜水，但最终他让步了，因为她对她的技能是如此有把握。修饰整个句子使用副词，作状语。
3．John has three sisters． Mary is the ________ (clever) of the three．
答案：most clever/cleverest 设空后的of the three表示三者，因此暗示要用形容词最高级。
4．Don't defend him any more． It's obvious that he ________ (deliberate) destroyed the fence of the garden．
答案：deliberately 句意：不要再为他辩解了，很明显他是故意弄坏花园的栅栏的。分析句子结构及句意可知，此处应用 deliberate的副词形式修饰动词destroyed，意为“故意地”，故填deliberately。
