As a volunteer of the 2012 London Olympi
题型:选择题
问题:
As a volunteer of the 2012 London Olympic Games, which sign will you prepare to remind people to keep the environment clean?
A.
B.
C.
D.
As a volunteer of the 2012 London Olympic Games, which sign will you prepare to remind people to keep the environment clean?
A.
B.
C.
D.