（根据首字母或中文提示写出单词，每空一分，共10分）
1.  We have an old m________ instrument. It is called a clavichord.
2.  Nearly everybody enters for “The Nicest Garden C____” each year, but Joe wins every time.
3.  They were e________ a valuable parcel of diamonds from South Africa.
4.  Do you have any idea of the ___________(平均) size of classes in the UK.?
5 Good ________(准备) should be made before we have the Mid-term examination.
6.  __________ (注意力集中) more on your work or you will be fired.
7  The difficulty of the problem c__________ me to find a solution.
8.  I found it difficult to keep my b________ on the icy road.
9.  In China most teenagers still depend on their parents, while those in the USA at their age try to be i_________.
10. The college student i__________ that he should be sent to the west, where he was most needed.