this is his house and it was built 5 years ago in______ was once an old yard.
问题描述：
this is his house and it was built 5 years ago in______ was once an old yard.
A.where B.which C.what D.that
为什么不选B
答
从句少主语.
所以要选个可以作主语的.
意为:就是在那个XXX地方
B不可以:改下原题.
this is his house and it was built 5 years ago in THE PLACE ______ was once an old yard.
BD就都可以了.