Ⅰ.单句语法填空
1．They arrived at a farmhouse, in front of __which__ sat a small boy.
2．The engineer，with __whom__ my father works，is about 50 years old.
3．He is good at English, __as__ we all know.
4．Li Ming, with __whom__ I went to the concert, enjoyed it very much.
5．The letter is from my sister，__who__ is working in Beijing.
6．In our factory there are 2,000 workers, two thirds of __whom__ are women.
7．I lost a book, __whose__ title I can’t remember now.
8．Last summer we visited the West Lake, for__which__ Hangzhou is famous in the world.
9．This machine, __which__ I have looked after for many years, is still working perfectly.
10．He is working hard, __which__ will make him pass the final exam.
