the flat on the second floor _____ windows are open is Mr Lee's.
问题描述：
the flat on the second floor _____ windows are open is Mr Lee's.
A.whose B.which C.that D.don't they
答
应该选择A,whose
因为这是一个从句,而且是一个特殊疑问从句,windows需要一个指代词,∴用whose