Ⅰ.把下面的句子合并成定语从句
1．This is the house. We lived in the house ten years ago.
→This is the house where/in_which_we_lived ten years ago.
2．The professor tried to find the reason. The girl did not understand the lecture.
→The professor tried to find the reason for_which/why the girl did not understand the lecture.
3．Wednesday is the day. The shops are not open in the afternoon on that day.
→Wednesday is the day when_the_shops_are_not_open in the afternoon.
4．His glasses were taken away by a naughty boy. Without them he could see nothing.
→His glasses, without_which he could see nothing, were taken away by a naughty boy.
5．Physics is the subject in our school. Every student is interested in it.
→Physics is the subject in our school in_which every student is interested.
