国际奥林匹克委员会已经决定第31届奥运会于2016年在里约热内卢举办。这个组织的英文简写是_________.

Mother's Day is coming. And I'll buy a specialfor my mother.

I like reading. I often go to ___________.

 — Could you tell me something about the boy who helped you just now ?— Sorry, I know nothing about him. We are ______.

 The music made me think of the __________ of a running stream.