英语定语从句练习
在下面各句空格内填上适当的关系词,并说明其在定语从句中的用法.
1.Can you tell me the reason________it is so hot today?
2.The museum_______ we visited yesterday is not far from here.
3.I want to know the day ________ shanghai was liberated.
4.The room _______ has two windows is our office.
5.we'll never forget the years________ we spent in the countryside.