主从复合句：【4】道题,1.The farmer uses wood to build a house ______ t

主从复合句：【4】道题,
1.The farmer uses wood to build a house ______ to store grains.
A.with which B.to where C.which D.in which
我选不出来诶.
2.I really don´t know ______ I had my pocket picked.
A.where was it that B.it was where that
C.where it was that D.was it where that
我选的是B,,为什么?
3..He insisted that he ______ right in doing that.
A.should be B.was C.would be D.is
我选的是A,为什么?
4.——Have you heard from Mary recently?
——Yes,she said she was thinking ______ she should do next.
A.that B.of what C.what D.how
我选的是C,为什么?