根据题意，选择最佳答案，或者选取最合适的答案。

1. With his son _____ , the old man felt unhappy.
   to disappoint disappointing
解析：解析试题分析：考查形容词用法。disappointing令人失望的；disappointed感到失望的；句意：因为他的儿子令人失望，这位老师感觉很不开心。要注意虽然现在分词转换的形容词通常用来修饰事物，但是很多情况下也可以修饰人。故B正确。
2. The ___ faces to the east.
   mood window
解析：分析：那个窗户朝东。
3. –-I never thought she would _______ my invitation to the concert. —She would feel sorry for missing the concert someday.
   refuse suppose
解析：试题分析：句意：我从来就没有想到她会拒绝我对她看音乐会的邀请。她总有一天会为自己错过这场音乐会感到后悔的。根据第二句的内容可知，对方是没有去看音乐会的，所以应该是拒绝了他的邀请；suppose意为“猜想、假如”；return意为“返回”；remind意为“使人想起”；故选A
4. The map is one of the best tools a man has ________ he goes to a new place.
   however whenever
解析：试题分析：考查状语从句。句意：无论何时他去一个新地方，这幅地图都是他最好的工具。What要在句中做主语，宾语，表语等成分。BD两项与句意不相符。故A正确。
5. This piano is too big. Can you make _______ for it?
   a space some space
解析：试题分析：句意：这个钢琴太大了，你能给它一些空间吗？space空间，为不可数名词，没有复数形式，可以用some来修饰，故选B
6. Hurry up! The black clouds ______that it is going to rain soon.
   trouble indicate
解析：分析：快点！黑云预示着快要下雨了。
7. His wedding clashed with my ____ so I couldn't go.
   book examination
解析：他的婚礼与我的考试时间冲突，所以我去不了。
8. I mucked in with him till ____.
   careless Christmas
解析：在圣诞节前，我一直和他住在一起。
9. The Chinese river dolphin is one of the First-Grade State Protection animals, a (an) ____ mammal with its name – water panda.
   official rare
解析：解析试题分析： rare罕见的，稀少的，official正式的，官方的句意：中国海豚是国家一级保护动物，一种被叫做水中大熊猫的稀有的哺乳动物。
10. The accident taught him to be more _____.
    careless careful
解析：这起事故的教训使他变得更小心。
11. Don't____ in other's private concerns.
    interfere advice
解析：分析：不要干涉别人的私事。
12. She loves music and is now learning to play an ____________.
    instrument incident 
解析：分析：她喜欢音乐，现在她开始学习一种新的乐器。
13. ____ was picked and weighed up.
    iron cotton
解析：分析：棉花已摘下来，并已称重。
14. All hope was not lost. Slowly, the city began to _____________ again.
    burst breathe
解析：试题解析：句意：人们没有丧失希望。渐渐地，这座城市再次恢复生机。
15. They doubted my _______ to solve problems, but I proved that they were all wrong.
    strength ability
解析：试题分析：句意：他们怀疑我解决问题的能力，但是我证明了他们是错的。A. strength强项；B.talent天赋；C.ability能力；D.skill技能。故选C。
16. We should be celebrating their ____ to show such courage.
    wish willingness
解析：分析：我们应该祝贺他们表现出这种勇气的意愿。
17. The company suffered a heavy ____ because of the accident
    lost loss
解析：试题分析：句意：这个公司因为这次事故遭受了巨大的损失。此题根据形容词后面应该使用名词这个语法知识。故选B。
18. The __________ of his books among parents and the recommendation of experts both at home and abroad have quickly made him a celebrity educator.
    personality popularity
解析：试题分析：句意：他的书深受家长的欢迎并且在国内外专家的推荐下很快使他成为有名的教育家。similarity类似；popularity流行，受欢迎；personality个性；possibility可能性。根据句意故选B。
19. I live next to One Plus One Supermarket. It’s very for me to go shopping.
    far convenient
解析：试题分析：It’s +形容词for sb+to do表示做某事对某人来说是……；句意：我住的紧挨着One Plus One超市，对我来说购物是非常方便的。结合句意，故选C 考点：考查固定句型的用法。
20. What you said ____ my plan.
    experience spoiled
解析：分析：你说的一席话把我的计划给毁了。