把一根燃着的木条,分别伸入装有呼出的气体和普通空气的集气瓶内,观察到木条在空气瓶内燃烧更旺,由此说明( )。
_______ monkeys can ________ in the tree.. A The swing B Does swing C The swinging
What is the rabbit doing ? It’s _______________. A running B climbing C swimming
_______ Zhang Peng and Mike playing chess in the room ? A Does B is C are
The elephants often ________ water with ________ trunks . A drinking it’s B drinking their C drink their
is Sarah? She is in the car. A What B Where C That