短文改错。
      此题要求改正所给短文中的错误。对标有题号的每一行做出判断：
     如果有错误（每行只有一个错误），则按下列情况改正：
     此行多一词：把多余的词用斜线（）划掉，在该行右边横线上写出该词，并也用斜线划掉。
     此行缺一词：在缺词处加一个漏字符号（^），并在该行右边横线上写出该加的词。
     此行错一词：在错的词下划一横线，在该行右边的横线上写出改正后的词。
     注意：原行没有错的不要改。

Dear Helen,      Thank you so much for your party at Christmas Eve. All of them enjoyed it very much. We liked the dishes you had cooked but we were happy to learn the English songs you taught us. We hope you"ll teach us a lot many songs in the future.      We"re leaving from our hometowns to spend the winter vacations. It seems that many of us are homesick after being away from home for such the long time. What are your plans? Will you join in the tourist group organized by our school?        We are busy prepare for our trips. Please excuse us for not able to say goodbye to you.      We hope you"ll have a good time.                                                                       Yours,                                                                      Xiao Hua	1.______ 2.______ 3.______ 4.______ 5.______ 6.______ 7.______                     8.______ 9.______ 10.______
1.at-on   2.them-us  3.but-and   4. many-more  5. from-for. 6.vacations-vacation 7.the-a . 8.去掉in   9.prepare-preparing   10.not后加being.
The winter of 1990 was extremely bad. _____ most people say it was the worst winter of their lives.
[     ]
A. At last B. In fact C. In a word D. As a result
The accident is reported to have occurred _____ the first Sunday in February.
[     ]
A. at B. on C. in D. to
The home improvements have taken what little there is _____ my spare time.
[     ]
A. from B. in C. of D. at
The conference has been held to discuss the effects of tourism _____ the wildlife in the area.
[     ]
A. in B. on C. at D. with
— What do you want _____ those old boxes? — To put things in when I move to the new flat.
[     ]
A. by B. for C. of D. with