（ ）1.So quickly are science and technology advancing ______

（ ）1.So quickly are science and technology advancing ______ is a possibility today may be a reality tomorrow.
A.now that B.what C.that what D.what
question:为什么不能选择C?
( )2.Christina bought,______'s most fashionable at the time,a black fur coat.
A.it B.which C.that D.what
question:为什么不能选择D?而需要选择B?
( )3.The event,______ the first one of such kind in history ,attracted the attention of us all.
A.that was B.what was C.being D.was
可是第三题答案为C啊……