题目内容：

A.根据句意、首字母或汉语意思完成单词。

1.Do you know the saying “A friend in need is a friend i________”?

2.—Where’s Mr Green?

—He has gone to attend an i________ meeting.

3.It’s important to_______(教育) the young students.

4.The heavy work _______(影响) his health, so he looked much older.

5.I write to my mother every week, _______(主要) on Sundays.