题目内容：

下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

Red is used in many American expressions. It can be used to show 1.   (happy), as in “a  red- letter day”. This is a day when something special happens. The expression is probably based 2.   church customs. For almost six hundred years, church calendars(日历) 3. (mark) with red to indicate special holidays. Today’s calendars are still marked that way with the _4. (meaning) of holidays and special days printed in red.

The expression “a red-letter day” is often heard in everyday life. A red-letter day is   5.   day when people are feeling quite happy. It may be a day   6. __ you’ve long waited for, a wedding day, for example, or it may be a day with a happy surprise. You might tell your friends that yesterday was a red-letter day,  7.  you won sonic money in the state lottery (彩票).

“Rolling out the red carpet" is another 8. (common) heard expression, which 9. (represent) a warm welcome of any kind. A city may “roll out the red carpet” for its baseball team when the team arrives home after winning the championship.

Red is also used in some expressions that are not happy. Red-handed is one. To be caught red handed is to be caught 10.  (perform) a wrong act.