His friend found to tell him the truth . A. that was necessaryB. necessaryC. it’s necessar

问题补充：

His friend found to tell him the truth .

A. that was necessary

B. necessary

C. it’s necessary

D. it necessary

答案：

A. that was necessary

B. necessary

C. it’s necessary

(答案→)D. it necessary

解析：考查it 用法。it 做形式宾语真正宾语为to tell him the truth