外研版必修3《Module5 Grammar》课时作业含答案
Ⅰ.用适当的关系代词或关系副词填空
1．Ancient China was a place ________ states were often at war with each other.
答案：where
2．October 1,1949 was the day ________ the People's Republic of China was founded.
答案：when
3．I don't know the reason ________ she looks unhappy today.
答案：why
4．The man ________ is shaking hands with my father is a policeman.
答案：who
5．This is the scientist ________ name is known all over the country.
答案：whose