_________ it takes many years to gain the skills of an expert.
#15083
A
It is well known to us that
B
As is known to us that
C
As we know that
D
That is well known to us
推荐题目
 ----- Do you have ______ bananas? -----Yes, I have_____.
#16516
A
some, any
B
some, some
C
any, some
D
any, any
He is very smart and       can be hidden from him.
#16151
A
nothing
B
something
C
everything
D
anything