I will not go to the gathering unless officially _________-.A.inv_英语解答

I will not go to the gathering unless officially _________-.
A.invited
B.to be invited
C.inviting
D.invite
为什么不能选B?

人气：104 ℃　时间：2020-05-03 13:21:23

解答

invited
被动
句意：我不会去聚会除非被正式得邀请.
officially 是副词修饰动词.
这里应该是省略了 i was (officially invited)