I——frustrated when I did not know the answer
I——frustrated when I did not know the answer
the challenging friend I did not know
.She _____ know the answer,but I’m not sure.
i want know the answer
I didn't know the answer,__.A.so does heB.so did heC.nor did
she ——know the answer ,but i‘m not sure.横线上应填什么?情态动词填空
when i tear i.dont know why i did not come
I did not know a______/a_______ at the party
how much does the coat cost(i did not know)
I did not like the man.Do you know?
I did not know what to expect when I was going to China
I can not answer your questions because I know()about the su