Ⅰ.单句语法填空
1．The boy about whom they often talk is very kind.
2．Is there any reason for which you should have a holiday?
3．There are different kinds of books from which you may choose.
4．There are very few existing studies to draw conclusive evidence on which pram design is the best.
5．Water is a thing without which man can't live.
6．We settled down in a small house in front of which lay an old tall tree.
7．The school in which the celebration is held lies in the east of the town.
8．Do you remember the day on which we entered the semifinals?
9．This is the man with whom I have worked together for twenty years.
10．The plan to which most people present didn't agree was called off.
