A. What if
B. How come
C. What about
D. Only if

1. He was active in politics and was strongly against ________ (奴隶制度).
2. English and ________ (美国的) spellings of some words are different.
3. His short-term ________ (记忆) was damaged in the accident.
4. The ________ (正常的) temperature for a human being, no matter in what part of the world he
    lives, is about 37℃.
5. Employers usually ________ (偏爱) candidates with some previous experience of the job.
6. We can save words by ________ (安排) the sentence like this.
7. In the US, winter wheat is ________ (收割) in the early summer.
8. I do not think there can be any doubt that she'll ________ (克服) the difficulty.
9. Neither recorders nor ________ (照相机) are allowed in the theatre.
10. He said that he hadn't been treated ________ (公平地) by the policeman.

1. We all know that he is too ________ (顽固) to apologize.
2. When the boiler ________ (爆炸) many people were hurt by the steam.
3. The scientists have made a ________ (有价值的) discovery recently. 
4. More than 10,000 ________ (运动员) took part in the 29th Olympic Games in Beijing in 2008.
5. He ________ (承认) having killed his wife. So he was sentenced to death.
6. Many people are going to serve as ________ (志愿者) in the Guangzhou Asian Games. 
7. What he's bought for me is ________ (正是) what I have been looking forward to. 
8. In most maths examinations senior high school students are allowed to use ________ (计算器)
   in the exams.
9. My uncle is grateful to me for________ (说服) him into giving up smoking.
10. At first, I thought these flowers were real, but they are ________ (人造的).

1. He didn't work hard all the term. So it's o_____ that he can't pass the final examination.
2. The teacher gave no r_____ to Tom's composition, and left the classroom without a word.
3. In order to resist against the earthquake, the s_____ of the building has been red-signed in common.
4. She s_____ on her bedside lamp and tried to read.
5. As we all know Mao Zedong has a strong Hunan a_____ .
6. The male birds have_____ (与众不同的) black and white marks on their heads.
7. In English the spelling of words doesn't always _____(代表) the sound.
8. She is an excellent _____(语言学家) known all over the world.
9. You should do more and try your best to _____(影响)him.
10. I went to the bookstore yesterday and bought a _____ (参考) book.

A. compare with/ compare to
1. Don't _____ your strong points _____ other's disadvantages.
2. Man's life is often _____ a candle.
3. _____ his girlfriend, his sister is quite tall.
B. various/varied
5. The influence degree of the anxious state on students' examination result is _____.
6. Practice tenses as much as possible, when you learn a new verb, learn its _____ forms.
7. Why do the _____ characters need so much money?
8. Human's ability is many and _____ -the different knowledge structure will form the different ability.

1. The ______ (大多数) of the students in my class are from the country.
2. The temperature of the ______ (全球) has risen as a result of pollution.
3. With so many people ______ (交流) in English,it's important for us to learn English well.
4. Can you imagine the difficulty we had ______ (理解) each other?
5. After the American War,American became an i______ country.
6. The e______"Thank you" and"Please" are important in our daily life.
7. English plays an important part in ______ (国际) trade.
8. Can you manage to s______ in a forest alone?
9. Do you like c______ music or pop music?
10. It is known to all that China is a d______ country while Japan is not.

1. It's important for us to ________ (体验) nature.
2. Their travel ________ (目的地) is the seaside.
3. Let's ________ (合并) learning with relaxation.
4. We'll go on our ________ (各自的) holidays.
5. You must pay attention to your ________ (安全) when crossing the road.
6. Our city was struck by the heavy flood. With the help of the government,
    everything returned to n________ quickly.
7. Some people travel for learning, and (while) others travel for p________.
8. Rafting is more a________ than hiking.
9. We should protect the e________ and love nature.
10. Have you c________ making friends with Tom?

1. The company asked the a_____ to work out the cost of the product.
2. I can still remember clearly the moment when I had a close e_____ with death.
3. This is only a t_____ solution to the problem. I have to work out a long-term solution.
4. To be a q_____ teacher, you need to have a good knowledge of the subject you are teaching.
5. Having a positive attitude towards work is e_____ if you want to achieve success.
6. Every day we meet people with different _____ (个性).
7. His monthly _____ (薪水) is just RMB1,500.
8. His encouraging speech left a _____ (深刻的) impression on me.
9. He didn't accept my _____ (要求) that he do the work.
10. Our school is trying to make more dormitories _____ (可用的) for the students.