Ⅰ.用适当的关系代词填空
1．The building ________wall is white is our libra ry.
答案：whose
2．I know the girl ________you are looking for.
答案：that/who/whom
3．I have done everything ________ I can do for you.
答案：that
4．This is the very book _______ _you bought yesterday.
答案：that
5．The student ________the teacher praised at the meeting is our monitor.
答案：that/who/whom
