两个选择题

1.Is this the factory ___ he worked twenty years ago?

这个空是不是选where或in which 都对？答案只选where．

2.The building over there is library,__is our library.

A.on the east of which

B.to the east of it

C.east of which 这个题帮我解释下原因，谢谢了．

1,都对where在这里=in which

2,C

east of which=to the east of which