( 1 ) 主要，主要部分；主要的；主要地，大部分
　　1. He is the __________ character in the story.
　　2. Our __________ meal is in the evening.
　　3. His money comes __________ from business interests.
　　
( 2 ) 管理，经营，设法完成；经理，管事人
　　1. The prime minister really __________ the government.
　　2. He __________ to escape to South America.
　　3. Mother hasn't much money and it is only by good ____________ that she is able to buy all we need.
　　4. Only a good __________ can run a household on fifty dollars a week.
　　
( 3 ) 意思，意义，意思是
　　1. What's the _________ of this word?
　　2. The words are spelt differently, and __________ quite different things.
　　3. Smoke usually __________ fire.
　　4. Thoughts are expressed by __________ of words.
　　5. Taking a plane is the quickest __________ of getting there.
　　
( 4 ) 医学，医疗，医药
　　1. __________ research may find a cure for cancer.
　　2. Tuition, rooms, books, and __________ care are all free.
　　3. This is a good kind of __________ for colds.
　　4. Always keep __________ where children can't get at them.
　　
( 5 ) 错误，弄错，错误的
　　1. I __________ you for your brother.
　　2. Bob has the __________ idea that tomorrow is a holiday.
　　3. I was __________ about her age.
　　4. When I am tired I frequently make silly arithmetical __________.
　　
( 6 ) 混合，搅和；混合物
　　1. Green is a __________ of blue and yellow.
　　2. Shake the __________ before taking.
　　3. His feelings about his daughter's marriage are rather ___________.
　　4. __________ this oil with the paint and stir well.
　　
( 7 ) 最，最多，大多数，主要，大部分
　　1. Of course __________ of them don't agree with his opinion.
　　2. Of these sports, I like rowing __________.
　　3. The guests are __________ friends of the bride.
　　
( 8 ) 移动，搬动，活动，运动
　　1. Don't make a __________ or I'll shoot.
　　2. Keep still, don't __________.
　　3. The train was already __________.
　　4. He lay there without __________.
　　5. The army's __________ were kept secret.
　　
( 9 ) 自然，本性，天性；自然的，天生来的，天然的
　　1. Man is engaged in a constant struggle with __________.
　　2. Tigers are cruel by __________.
　　3. Her hair curls __________.
　　4. She had a __________ gift for teaching.
　　5. She finds great interest in __________ science.
　　
( 10 ) 国家，民族，国籍
　　1. The president spoke on radio to the __________.
　　2. A novelist must be able to use the cultural heritage of his __________.
　　3. The __________ news comes after the international news.
　　4. She lives in France but has British __________.
　　
答案：
　　( 1 ) 1. main　2. main　3. mainly
　　( 2 ) 1. manages　2. managed　3. management　4. manager
　　( 3 ) 1. meaning　2. mean　3. means　4. means　5. means
　　( 4 ) 1. Medical　2. medical　3. medicine　4. medicines
　　( 5 ) 1. mistook　2. mistaken　3. mistakes
　　( 6 ) 1. mixture　2. mixture　3. mixed　4. Mix
　　( 7 ) 1. most　2. most　3. mostly
　　( 8 ) 1. move　2. move　3. moving　4. movement　5. movements
　　( 9 ) 1. nature　2. nature　3. naturally　4. natural　5. natural
　　(10) 1. nation　2. nation　3. national　4. nationality