1．Games can sometimes make learning more __enjoyable__.
2．The man __aware__ of having done something wrong felt very sorry.
3．I suggest you have a quick word with the person __concerned__(相关的)．
4．The __greedy__ little boy took all the oranges away，leaving none for his friends.
5．They must have new markets for their __product(s)__．
6．Don't be __ashamed__ to say you haven't got much money when the item you want is expensive for you.
7．I find it __annoying__ when people smoke in public places.
8．You can't pay by check.You should pay in __cash__.
9．Mum always tells me to __behave__ myself when I go out.
10．It is not who is right but what is right that is of __importance__(重要性)．
11．The information you need is __contained__(包含) in this report.
12．Computer games mainly __appeal__(吸引) to young people.
13．He thinks he has the __freedom__(自由) to do what he likes.
14．Because of his strange clothes, he immediately became the __focus__ of attention when he entered the office.
15．When you have finished the book, please __replace__ it on the shelf.
