问题
选择题
—How was your climbing on Mount Tai?
—I didn't believe I could do it I got to the top. [ ]
A. until
B. unless
C. after
D. when
答案
答案：A
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—How was your climbing on Mount Tai?
—I didn't believe I could do it I got to the top. [ ]
A. until
B. unless
C. after
D. when
答案：A