Beneath our feet_____ that our lives depend on for food and clothing.
A. lies the earth B. lay the earth C. the earth lies D. does the earth lie
The factory produces half a million pairs of shoes every day, 85% ____ sold abroad.
A. of them are B. of them is C. of which is D. of which are
Shackleton kept his promise ____he would return to Elephant Island ____the crew had been left.
A. which; that B. that; which C. what; where D. that; where
I like taking risks, too. I suppose it ______ in the family.
A. jumps B. walks C. runs D. keeps
Mike spent time with ____native people to gain ____ better understanding of the country.
A. the; a B. the; / C. a; the D. /; a
假设你是李华，你于2014年1月5日搭乘某航空公司航班（the flight BA736），回家后发现遗失了一个行李箱。现在用英文给该航空公司写一封信，请他们帮你寻找。
信件要点包括：
陈述写信原因；
简要描述该行李；
说明该行李的重要性；
期待回复并表示感谢。
注意：
1．词数100左右；
2．可以适当增加细节，以使行文连贯；
3．开头和结尾已为你写好，不计入总词数。
Dear Sir/Madam,
____________________________________________________________________________
____________________________________________________________________________
Yours truly,
Li Hua
