Question

【题目】—What a clean and bright classroom, isn’t it?

—Yes, it’s always clean and bright because it every day.

A. cleans B. cleaned C. is cleaned D. was cleaned

Answer 1

【答案】C

【解析】

试题句意：多么干净明亮地教室啊，是吗？——是的，他总是干净明亮是因为每天打扫它。结合语境可知下文原因状语从句中描述的是客观性动作，故用一般现在时态。主语是动作对象，故用被动语态。选C。