---- Are these your _______? ---- Yes, they’re my uncle’s sons.

—Are you in        ?— Yes, I am .

He is a teacher with a lot of ______. He often tells us many of his interesting _____ in Africa.

 She was surprised by her new book’s      .

 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_________.