Question

【题目】My mother ______ the window already, so the room looks much brighter.

A.had cleanedB.has cleaned

C.is cleaningD.will clean

Answer 1

【答案】B

【解析】

考查时态。句意：我妈妈已经把窗户擦好了，所以房间看起来明亮多了。根据“so the room looks much brighter”可知此处强调过去的动作对现在造成的影响，应该用现在完成时，故B项正确。