根据题意，选择最佳答案，或者选取最合适的答案。

1. Although he _______ the danger to his own health, he found it difficult to quit smoking.
   was very aware of was well aware of
解析：解析：考查词组：be aware of意识到，aware这个形容词用well修饰，句意：虽然他意识到自己健康的危险，但他发现很难戒烟。选B
2. You’ll _______ the department until the end of the year. Next year you will be rearranged.
   be attached to be belonged to
解析：解析：今年年底你就会住进公寓里，下一年你会被从新安排。根据句意应选择A
3. – Nobody but you _______ late for school this morning. --Sorry , I _______ to school when it began to rain heavily
   was , went was , was about to go
解析：解析：句意：除了你今天早上没人迟到了。对不起，我即将上学的时候，天开始下起了大雨。Be about to do sth即将做某事，所以选B。
4. Soon she ____ swim a quarter of a mile
   can will be able to
解析：解析试题分析：can能，能够；is able to能够；will be able to能够。句意：不就她就能游四分之一公里了。结合语境可知本句描述的是将来的动作，故用一般将来时态，选B。
5. The little girl was jumping __________ in the kindergarten, waiting for her mother.
   back to forth up and down
解析：解析试题分析：can能，能够；is able to能够；will be able to能够。句意：不就她就能游四分之一公里了。结合语境可知本句描述的是将来的动作，故用一般将来时态，选B。
6. ―The river runs clear. ―We all appreciate the importance the local government has______ the environmental protection.
   attached to contributed to
解析：解析：句意，这是两个人之间的对话。第一个人说：“这条河很清澈” 第二个人说： “我们都很感谢当地政府意识到了环境保护的重要性。” attach to 在....上 contribute to 促成
7. The magician picked some persons from the audience _____ and asked them to help him with the performance．
   by accident at random
解析：解析：短语辨析。A偶然；B徒劳；句意：那位魔术师从何观众中胡乱调出了几个人，并请求他们帮助表演。根据句意说明B正确。
8. “China is still a developing country ___________.” said Premier Li at the conference
   at present for present
解析：解析：考查固定短语。句意：李克强总理在会议上说：“中国目前仍然是一个发展中国家”。at present目前，现在，故选A。
9. Students should do sports _______one hour a day. —I agree. It’s good for their health
   at least; in fact
解析：解析：句意：——学生们应该每天做至少一个小时的运动。——我同意，这对他们的身体有好处。of course当然；as long as只要……就；at least至少； in fact事实上。根据题意，故选A。
10. ——, we worked out the problem.
    At last Above all
解析：解析：A项最后，终于；B项毕竟，终究 句意为：最后我们计算出了这个难题。
11. —What a heavy rain! —So it is.I prefer ________ rather than ________ on such a rainy day
    to go out; stay at home to stay at home; go out
解析：解析试题分析：句意：——多大的一场雨呀？——的确很大。在这样的雨天我宁愿呆在家里也不愿意出去。 prefer to do sth rather than do sth 宁愿……而不愿……。根据语意和语境故选B
12. ________they visited the Science Museum，they showed great interest in everything they saw.
    At first; For the first time
解析：解析试题分析：考查连词。句意：他们第一次参观科技博物馆时，对所看到的一切表现出很大的兴趣。For the first time第一次，做状语；at first 首先所以选A项。
13. Doctors and nurses tried their best to make the patient feel _________
    at ease with ease
解析：解析试题分析：考查固定词组。at ease舒适，句意是：医生和护士尽最大努力让病人舒适。
14. o you mind taking the guitar to the office for me? ---________. Put it in my car, please.
    Of course Of course
解析：解析:A项 一点也不，B项当然了 句意为：——你介意帮我打吉他带到咖啡馆吗？ —— 一点也不，把它放到我的车里吧。根据句意选A
15. Why not ____ help when you were in trouble?
    you ask for ask for
解析：解析试题分析：why not do sth.？表示“为什么不做某事？”是固定句型。本题的意思是“当你在困难中的时候，为什么不寻求帮助呀？”所以本题选B
16. I’m going to London and my sister is going _______.
    also as well
解析：解析：句意:我打算去伦敦，我的姐姐也打算去。also 也，常位于句中；as well常位于句末。根据句意和他们的用法可知选B。
17. Wang Fang is young, but she plays Ping-Pong ______ her mother.
    as good as as well as
解析：解析试题分析：句意为：王芳虽然小，但是她乒乓球打得和她妈妈一样好。根据语境，这里应用副词修饰动词play。由于这是同级的比较，副词用原形，即as+形容词或副词原级+as。故选B
18. His remarks were ________ enrage everybody at the meeting.
    so as to such as to
解析：解析句意：他的言论是如此这样的以至于激怒在会议上的人。such as to 是英语里的一个固定用法，表示“到如此程度以致……”，so as to为了，选B。
19. Not until he went through real hardship ________the love we have for our families is important.
    had he realized did he realize
解析：解析试题分析：考查倒装。Not until置于句首，主句用部分倒装。realize的动作和go through同时发生所以用一般过去时态。答案选B。句意：直到他经历了真实的艰难困苦，才意识到我们对家人的爱是多么重要。
20. When asked how he came up with the excellent idea, he said one of his childhood experiences was the original ____ to begin his story.
    application inspiration
解析：解析试题分析：考查名词辨析。句意：当被问到他是怎样想到那个好主意时，他说灵感来自于他童年的一次经历。A申请，申请书，应用；B灵感，启发，故选B。