单词拼写
     根据下列各句句意和空白之后的汉语提示词，在指定区域的横线上写出对应单词的正确的完整形式，每空只写一词。
1. The assistant is very friendly to all the ________ (顾客).  
2. I like English best; what is your _______ (最喜欢) subject?              
3. He dived into the water, leaving only his face ________ (裸露)
4. A great celebration was held on his ________ (五十岁) birthday.
5. If you knock into somebody, you should ________ (道歉) to him.
6. Please speak as loud as you can to make yourself ________ (明白).        
7. I think you can sit on this newly bought chair very ________ (舒服).      
8. - This problem is not difficult.  - But that one is even ________ (容易).
9. When I came to the riverside, I found a boy _________ (挣扎) in the water.        
10. The students in our school study very hard, _______ (尤其) those in our class.