The blackboard was wiped .A. cleanB. cleanedC. cleanlyD. to be cleaned

问题补充：

The blackboard was wiped .

A. clean

B. cleaned

C. cleanly

D. to be cleaned

答案：

(答案→)A. clean

B. cleaned

C. cleanly

D. to be cleaned

解析：还原后成为“wipe sth＋形容词”,是形容词作宾补.在被动语态中,此结构中的形容词常用作主补.