did you attend the dancing party____at his house yesterday?A.held B.having been held

问题描述:

did you attend the dancing party____at his house yesterday?A.held B.having been held
C.to be held D.being held 选哪个 为什么?

A,完整的句子是did you attend the dancing party which was held at his house yesterday?
这里省略了which was ,作定语