【题目】I rushed for the door , fell _______ the cat in the hallway and a tooth fell ________.
A. over, out B. over, off
C. down, down D. down, out
在线课程【答案】A
【解析】
试题分析：考查动词短语。动词短语fall over被…绊倒，跌倒；fall down掉下；fall out脱落，解散；句意：我冲向大门，被走廊上那只猫绊倒，一颗牙齿脱落了。根据句意说明A正确。