museums in beijing are on the move
问题描述：
museums in beijing are on the move
Museums in Beijing are on the move,------exhibits that entertain and educatr.
A.added B.adding. C.to add D.having added
为啥选b呀,d怎么了
我想问的是having added怎么不对
答
因为museum和add是主谓关系,是主动的,所以用ing形式.