根据下列句子中的首字母或者汉语提示，在句子的横线上写出各单词的正确形式。

1．Steel is a mixture of iron and other _________ （物质） such as carbon, nickel（镍） and so on.

2．Rachel soon came to the            （结论） that John was only interested in himself.

3．When it was performed in America, there was an            （观众） of 100,000 people.

4．I can’t             （集中注意力于） on my study with all that noise going on.

5．If you smoke many cigarettes, you will easily become           （上瘾） to tobacco.

6．John is seriously ill, and his disease is so r____ that even the best doctors don’t know how to deal with it.

7．People should drive out of town to b       fresh air and relax at weekends.

8．The pressure of his job led to the complete b         of his health, so he had to receive treatment in hospital.

9．The Internet is the biggest source of information in the world, which can be a______ through a computer.

10．If the words of a song are c      , they are not easy to understand and the song is not catchy.

根据句意及所给单词的首字母或所给汉语注释，在下列句子的横线上写出各单词的完全形式。（每空只填一词）

1．Please have a dinner with us at six if it is c_____________ to you.

2．Stephen Hawking d__________ all his life to studying physics.

3．His life would be in danger if he were not sent to hospital i_____________.

4．With the development of modern agriculture and i________, more and more waste is produced.

5．There was a surprised e____________ on his face.

6．I’m into reading __________(冒险) stories.

7．My uncle is the manager of his ___________(运输) company.

8．Nie Haisheng and Fei Junlong have become ________(熟悉的) faces to millions of fans of space travel.

9．Not surprisingly, praise usually makes children _________(提高) greatly.

10．Large quantities of shoes are on sale in this stop, but few of them are of good ________(质量).

根据下列句子及所给汉语注释或所给单词的首字母，在句子的横线上写出各单词的正确形式，每空只写一词。
【小题1】It’s a fine day. Let’s go ___________(户外，野外) to enjoy the sunshine.
【小题2】She saw him coming but she __________ (不理睬) him.
【小题3】__________(事实上), on second thoughts, I don’t think I will go out with him..
【小题4】We learned that he was _________ (遭受) from cancer.
【小题5】The general _________(命令) his men to attack the city.
【小题6】They keep in touch with each other since they ________(毕业) from college.
【小题7】He is a _______(可靠的) man, so we can depend on him.
【小题8】The lifeboat was sent out to ______(营救) the sailors from the sinking ship.
【小题9】Believe it or not, Mary’s sister suddenly ______(爆发) into crying when we were eating.
【小题10】In the traffic accident, two were killed and three got _______(伤害，损害).