There is an increasing concern _____________ about Ebola infection. Every country has taken necessary measures to prevent it.

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_________.

The supermarket offers __________ goods to choose from, so more and more people prefer to shop there. [ ]

___________________—He has big eyes and a small nose.

Since we ________ our homework now. Let’shave a rest.