—HowwasyourclimbingMountTai?—Ididn’tbelieveIcoulddoit

問題詳情：

— How was your climbing Mount Tai? — I didn’t believe I could do it ________ I got to the top. A. until                 B. while                  C. after                  D. when

【回答】

A

知識點：連詞

題型：選擇題