Do you know ----he couid pass the exam?-Sorry ,I have no idea

问题描述:

Do you know ----he couid pass the exam?-Sorry ,I have no idea
A that B whether C what D which

你知道他能否通过考试吗?
不,我不知道.
问题问的是 能否,所以用whether 是否;
that 用这个的话表示通过了.
what 、 which句子中不缺宾语,可排除