在下列定语从句中填入适当的介词
1、The pencil _______ which he wrote was broken.
2 He bought a telescope ________ which he could study the sky.
3/ The woman,________ whom I learned the news,is a nurse.
4/The wolf _______ which the sheep wak killed was shot.
5/There is a tall tree outside,______ which stands our teacher.
6/Do you know the building ________ which is flying a red flag?
7/Ours is a beautiful school,__________ which we are proud.
【没见过这样的题~】