Don’t forget him about it.A. tell B. to tellC. tellingD. told

问题补充：

Don’t forget him about it.

A. tell

B. to tell

C. telling

D. told

答案：

A. tell

(答案→)B. to tell

C. telling

D. told

解析：forget后接动名词表示忘记了做某事,接不定式表示忘记去做某事,还没做.句意:不要忘了告诉他这件事.结合语境可知事情还没做,故选B.