问题
填空题
用when, where, why填空。
1. I will never forget the day ______ I joined the army.
2. This is the factory ______ my father worked 30 years ago.
3. A birthday is the date ______ one was born.
4. Do you know the reason ______ no one questioned Aristotle's theory then?
答案
1. when 2. where 3. when 4. why