请英语帝,讲解这道题when and why he came here _______yet.a\is not know

请英语帝,讲解这道题when and why he came here _______yet.a\is not know When and why he came here () yet?A is not known B are not kn When and why he came here ________ yet.A.is not known B.are I do not know why ____________.A.he come late B.he came here when and why he came here _____ yet. When and why he came here ________ yet.选什么 Do you know when he came here? When and why he came here ___ yet 为什么横线上的谓语动词用单数 一道英语单选题.-How and why Jack came to China ____ not known .When 英语逗号的使用方法1）一个句子：he came here and had a look.he came here, bu 英语 查语病.I know you are here and receive my message.Why do not 初三简单英语题1、He left here when his father came back.He()()here()