Mary can’t attend the party _____ at Tom’s house at present ______ at Jenny’s house tomorrow.

问题描述:

Mary can’t attend the party _____ at Tom’s house at present ______ at Jenny’s house tomorrow.
A.being held; to be held
这句话省略了and吗?可以这样省略的吗?

Mary不能参加现在在Tom家里举办的宴会,也不能参加明天在Jenny家举办的宴会