問題詳情：
Your sister is said ________ in the supermarket when she was doing shopping yesterday.
A．to be badly treated B．to have been badly treated
C．being badly treated D．treating badly
【回答】
B [sb be said後一般搭配不定式，意爲“據說某人……”。該句treat與主語your sister爲動賓關係，故用不定式的被動式，且該動作發生在“is said”之前，因此用不定式的完成被動式。]
知識點：非謂語動詞
題型：選擇題
