问题
选择题
—Do you know _____ I could pass the exam?
—Sorry, I've no idea. [ ]
A. that
B. whether
C. what
D. which
答案
答案：B
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—Do you know _____ I could pass the exam?
—Sorry, I've no idea. [ ]
A. that
B. whether
C. what
D. which
答案：B