1．Can you think of a situation where this word can be used?
2．The reason why he resigned was that he quarreled with his boss.
3．Occasions are quiet rare when I have time to spend a whole day with my kids.
4．The English play where there were many kids at the New Year's party was a great success.
5．I will never forget the year when my son went to college.
6．What do you think of the suggestion that/which he made at yesterday's meeting.
7．Nobody knows the reason why she didn't attend the meeting.
8．We went through a period when communications were very difficult in the rural areas.
9．The days when we traveled together meant a lot to him.
