have come to know为什么是come为什么不是have came to know呢?

have come to know为什么是come为什么不是have came to know呢? I'm glad to meet you,Lucy.I ____ you____.A.don't know,have comeA.don't know,have come B.don't know,will come C.didn't know,would come选什么?为什么? 请问,come to know为什么等于realize?这里的come —Did Mary come to the party? —I don't know.She__while I was out.A.might have come B.might come 为什么不能选B --- Did Ann come to the party?--- I don’t know.She _____ after I was away.A.must have come-- Did Ann come to the party?--- I don’t know.She _____ after I was away.A.must have come B.might come C.may have come D.could come 选哪个?为什么 Did mary come to the party I do not know .she_wh-Did Mary come to the party I do not know .she_while I was out.-I do not know .She _while I was out.A.may have come B must have come C might come D could come为什么不用D 英语语法达人进oh come on you know that having been subject to arrest .I have the right to know the charges.请问为什么用having The public wants to know when the cleaners _____ to workA.have come back B.will come back C.come back D.shall come back Good evening!i have come to see miss jessica试题为什么用have come Tom,isn't it the third time that you ____ here to Beijing,as I know?A.come B.came C.have come为什么选C B错在哪里 please come to the restaurant to have dinner with us 为什么要用to have i would have come earlier,but i __you were waiting.为什么选didn't know不选hadn't know? —Did Mary come to the party?—I don't know.She__while I was out.A.might have come B.might come为什么是A不是B come and have something to drink?have是啥意思,为什么用to it's the first time that i -----to beijing为什么用come,不用have come Do you really have to go?Do you really go? Will come back? You know, I would like to you? i don't know if lucy will come to see me in five days.从句中为什么用“wiil come”? Do you know when to have a picnic?为什么用to have?