1. 【答案】tired

【解析】She was tired of fighting 她已经厌倦了争吵。词组be tired of厌倦…。两个形容词tired指人的情绪，tiring主要指事物。故答案为tired

2. 【答案】struggling

【解析】was tired of fighting and struggling . 厌倦了争吵和挣扎。and一般连接前后相同词性，这里连接fighting和struggling。故答案为struggling

3. 【答案】solved

【解析】as one problem was solved , 当一个问题被解决了。被动be+过去分词。故答案为solved

4. 【答案】arose

【解析】a new one arose. (接上句) 一个新的问题就出现了。考过去式。上句中was过去式，这句也用过去式。arise-arose-arisen。故答案为arose

5. 【答案】took

【解析】Her mother took  her to the kitchen. She placed carrots, … 她的妈妈把她带到厨房。她把一些胡萝卜放在……。考过去式，下句placed过去式，因此这里也用过去式，take-took-taken。故答案为took

6. 【答案】respectively

【解析】She placed carrots, eggs, and ground coffee beans respectively  in three pots 她把一些胡萝卜，鸡蛋和磨碎的咖啡豆分别放在三个壶里。修饰动词短语place carrots…用副词respectively分别地，各自地。故答案为respectively

7. 【答案】boiling

【解析】with boiling water 有沸水。boiling water沸水。有些ing可以修饰名词，如smiling face笑脸，sleeping beauty睡美人，manufacturing technology制造技术。故答案为boiling

8. 【答案】minutes

【解析】In about twenty minutes  过了约20分钟。名词复数，因为twenty。故答案为minutes

9. 【答案】brought

【解析】 Her mother brought her daughter closer and asked her to feel the carrots. 她的妈妈把她拉近了，让她去摸胡萝卜。考过去式，后面asked过去式，因此这里也用过去式, bring- brought – brought。故答案为brought

10. 【答案】pulling

【解析】After pulling  off the shell, 把壳剥开之后。after, before后接名词或句子，如果是动词，需用ing 。故答案为pulling

11. 【答案】Finally

【解析】Finally, the mother asked the daughter to sip the coffee. 最后，母亲让女儿去喝咖啡。修饰整句话，用副词。故答案为Finally

12. 【答案】objects

【解析】each of these objects  这些物体中每一个。名词复数，因为these。故答案为objects

13. 【答案】adversity

【解析】faced the same adversity  面临同样的逆境。the后面接名词或名词短语。adversity逆境。故答案为adversity

14. 【答案】differently

【解析】Each reacted differently. 每一个的反应都不一样。修饰动词reacted用副词。故答案为differently

15. 【答案】subjected

【解析】 after being subjected  to the boiling water, 在被沸水煮了之后。词组be subjected to 受到…; 经受…。故答案为subjected

16. 【答案】softened

【解析】it softened  and became weak. 它变软了变弱了。考动词，且需用过去式，因为后面became过去式。soften 变软，软化，动词。需用过去式softened。故答案为softened

17. 【答案】became

【解析】it softened and became  weak. 它变软了变弱了。考过去式，因为前面softened过去式，所以这里也用过去式, become-became-become。故答案为became

18. 【答案】protected

【解析】Its thin outer shell had protected (protect) its liquid interior 它薄薄的外壳保护了里面的液体。完成时have/has/had + 过去分词。故答案为protected

19. 【答案】sitting

【解析】after sitting  through the boiling water, 在经历过沸水后。after, before后接名词或句子，如果是动词，需用ing 。故答案为sitting

20. 【答案】hardened

【解析】 its inside became hardened. 它的内部变得坚硬。harden变硬，动词。hardened变硬的，坚硬的，形容词。故答案为hardened

21. 【答案】ground

【解析】The ground  coffee beans 磨碎的咖啡豆。固定短语ground coffee研磨过的咖啡。grind 磨碎，动词，grind-ground-ground, ground不仅是过去式过去分词，也是它的形容词，磨碎的。故答案为ground

22. 【答案】actually

【解析】 they actually  changed the hot water, 它们实际上改变了热水。修饰动词changed用副词。故答案为actually

23. 【答案】gets

【解析】When the water gets  hot, it releases the fragrance and flavor. 当水变热时，它会释放出香味和味道。考三单式，因为后面releases三单式，说明这是一般现在时，不是过去式，所以water做主语时，需用三单式。故答案为gets

24. 【答案】worst

【解析】when things are at their worst, 当事情最糟糕的时候。词组at one’s worst当情况最糟时。故答案为worst