问题详情：
Dear Tom，
I've finally made up my mind to go to America for further study after graduation. I've been longing to go to America, mainly __41__ two reasons. One reason is __42__ I want to experience American culture, __43__ is believed to be the most diverse in the world, and the other is that I hope to __44__ (broad) my horizon in this developed country.
But to tell you the __45__ (true), I have some worries about this. I don't have __46__ good command of English, especially spoken English, so I'm afraid I'll have difficulty __47__(fit) in very soon. Besides, I may suffer __48__ high pressure from college courses, which I'm not sure I can handle.
With so many things __49__(bother) me, I hope you can offer me some __50__(practice) advice.
Looking forward to your reply.
Yours，
Li Hua
【回答】
41．for on 由于……原因。
42．that that 引导表语从句，无意义，也不充当任何句子成分。
43．which which 引导非限制*定语从句，作从句中的主语。
44．broaden broaden one's horizon 拓宽视野。
45．truth to tell you the truth 说实话。
46．a have a good command of 精通。
47．(in) fitting have difficulty (in) doing sth. 费力做某事。
48．from suffer from 遭受。
49．bothering many things 与 bother 之间为主动关系，故用现在分词形式作宾补。
50．practical 形容词作定语。practical advice 实用的建议。
知识点：语法填空
题型：未分类
