——Anna didn't come to our party last night.Why?——sorry,I don
——Anna didn't come to our party last night.Why?——sorry,I don't know_______. A.what happened B.why didn't she come C.when will she come D.where she has gone
A what happened 表达我不知道她“发生了什么事”为何没来. B 如果把主谓语调换,why she didn't come.就正确了.从句必须是陈述句型. C 用 will 是将来时,而且也存在主谓语位置问题,所以完全不合适. D 语法没问题,但有点儿答非所问.只是问Anna为何没参加,并不是问她去哪儿了.