一、用所给动词的正确形式填空。
We are middle school students and we are busy with our lessons. So some people think we should 1. (spend) more time on our studies. And it's a waste of time to volunteer 2. (help) others.
But I think 3. (volunteer) is great. I not only 4. (feel) good about helping others but also get a chance to spend time 5. (do) what I love to do. And from volunteering I learned many things that I have never learned in class. So if I have an opportunity (机会), I'd like 6. (visit) the old people's home to clean up for them. I'd also like to help sick kids in hospital. I love kids and I plan 7. (put) my love to good use by working in hospital. In a word, I'd like to help people who need help. If everyone helps out a bit, the world 8. (be) more colorful.

1. spend
2. to help
3. volunteering
4. feel
5. doing
6. to visit
7. to put
8. will be

我们逐个分析每个空的语法规则：
1. 情态动词should后必须接动词原形，因此spend用原形。
2. 固定搭配volunteer to do sth. 表示“自愿/主动去做某事”，因此help要变为不定式to help。
3. 此处位于宾语从句的主语位置，动词作主语需要变为动名词形式，volunteer的动名词是volunteering。
4. 句中not only...but also...连接并列谓语，后文的get是一般现在时的动词原形，主语是I，因此feel用原形即可。
5. 固定搭配spend time (in) doing sth. 表示“花费时间做某事”，因此do要变为动名词doing。
6. 固定搭配would like to do sth. 表示“想要做某事”，因此visit要变为不定式to visit。
7. 固定搭配plan to do sth. 表示“计划做某事”，因此put要变为不定式to put。
8. 这是if引导的条件状语从句，遵循“主将从现”规则：从句用一般现在时，主句要用一般将来时，因此be变为will be。

二、根据括号中的单词或汉语提示完成句子。
1. The Yellow River is the second (长) river in China.
2. Tom made a (决定) to study English well.
3. Mary is sad and nothing can (使……兴奋) her now.
4. Though the boy is young, he can take care of (他自己) well.
5. A (游客) came and asked me the way to the amusement park.
6. These old toys have given me a lot of sweet (回忆).
7. It's (believe) that such a little boy can move so heavy a box.
8. Parents should teach their children how to be (independence).
9. The news he told you is (truth). You can believe it.
10. Doing chores helps to understand the idea of (fair).

1. longest 2. decision 3. excite 4. himself 5. visitor/tourist 6. memories 7. unbelievable 8. independent 9. true 10. fairness

1. 本题考查固定结构“the + 序数词 + 形容词最高级”，表示“第几最……的”，“长”对应的英文形容词为long，其最高级形式为longest。
2. 本题考查固定短语make a decision，意为“做决定”，此处需要填写名词“决定”的英文形式decision。
3. 本题考查情态动词的用法，情态动词can后接动词原形，“使……兴奋”的英文动词为excite。
4. 本题考查反身代词，“他自己”的英文表达为himself，take care of oneself意为“照顾自己”，符合语境。
5. 本题考查名词，不定冠词a后接可数名词单数，“游客”的英文可填写visitor/tourist。
6. 本题考查名词的数，a lot of后接可数名词时需用复数形式，“回忆”的英文是memory，复数形式为memories。
7. 本题考查词形转换，固定句型It's + 形容词 + that从句，结合句意“这么小的男孩能搬动这么重的箱子是难以置信的”，将动词believe转换为形容词unbelievable。
8. 本题考查词形转换，be动词后需接形容词作表语，将名词independence（独立）转换为形容词independent（独立的）。
9. 本题考查词形转换，be动词后需接形容词作表语，将名词truth（真相）转换为形容词true（真实的）。
10. 本题考查词形转换，介词of后需接名词，将形容词fair（公平的）转换为名词fairness（公平）。

三、完形填空。
The Door of Happiness
When one door of happiness closes, another opens. However, we often look at the 1 door so long that we can't see the one that has been opened for 2. It is true that we don't know what we've got until we lose it, and it's 3 true that we don't know what we've been missing until it goes away.
Giving someone all your love doesn't mean that they'll love you back. Don't expect love in 4. Just wait for it to grow in their hearts. There are many moments in
life when you miss someone so 5 that you want to bring them into your dreams and hug them for real! Dream what you want to dream, go 6 you want to go, and be what you want to be, because you have only one life and one 7 to do all the things you want to do. 8 lies in those who have cried, those who have been hurt, and those who have tried, because they can understand the importance of their lives. The 9 future will always be based on a forgotten past. You can't go on well in your life 10 you let your past failure and heartaches go.
1. A. open B. same
C. closed D. broken
2. A. us B. them
C. me D. you
3. A. too B. also
C. either D. hardly
4. A. need B. time
C. line D. return
5. A. many B. much
C. few D. little
6. A. when B. what
C. why D. where
7. A. chance B. choose
C. change D. chat
8. A. Happy B. Happiness
C. Happily D. Unhappy
9. A. brightest B. heaviest
C. cleverest D. bravest
10. A. so B. when
C. until D. that

1.C 2.A 3.B 4.D 5.B 6.D 7.A 8.B 9.A 10.C

1. 结合前文语境“当一扇幸福之门关闭，另一扇会开启”，本句表达我们常常过度盯着已经关闭的门太久，反而看不到新开启的门，closed意为“关闭的”，符合语境，选C。
2. 句子主语是we，对应表达“为我们打开的门”，介词for后用人称代词宾格us，选A。
3. 前文提到“直到失去才懂得拥有是事实”，本句要表达“直到事物消失才意识到自己错失了什么也同样是事实”，also用于句中表示“也”，符合用法；too通常放句末，either用于否定句句末，hardly表几乎不不符合语义，选B。
4. 固定搭配in return意为“作为回报”，句意为“不要期待付出爱就会得到爱的回报”，符合语境，选D。
5. 固定搭配so much用来修饰程度，此处表达“如此思念某人”，描述想念的程度很深，选B。
6. 此处引导地点状语从句，表达“去你想去的地方”，用连接词where，选D。
7. 句意为“你只有一次生命，也只有一次机会去做所有你想做的事”，chance意为“机会”，符合语义，选A。
8. 此处句子缺少主语，需要用名词，句意为“幸福存在于那些哭过、受过伤、努力尝试过的人之中”，Happiness是名词“幸福”，可作主语，选B。
9. 句意为“最光明的未来永远建立在被遗忘的过去之上”，brightest意为“最光明的”，修饰future符合语境，选A。
10. 固定结构not...until意为“直到……才”，句意为“直到你放下过去的失败和心痛，你的人生才能顺利前行”，符合语义，选C。