问题
选择题
______ is known to us all is that the 2016 Olympic Games will take place in Rio de Janeiro.
A.It
B.Which
C.As
D.What
答案
答案:D
______ is known to us all is that the 2016 Olympic Games will take place in Rio de Janeiro.
A.It
B.Which
C.As
D.What
答案:D