—How clean the window is!—Yes itjust now.A cleanedB has been cleanedC was cleaned

问题补充：

—How clean the window is!

—Yes, itjust now.

A、cleaned

B、has been cleaned

C、was cleaned

答案：

解析：题目中有明确的时间状语just now刚刚，句子用一般过去时；it指代the window，所以句子要用被动形式。句意：窗户多干净啊!是的，它刚刚被打扫过。