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Theclimbersreachthetopofthemountain,butbecauseofthesuddensnowstorm,theycomedown.A.could,weren’tabletoB.wereableto,couldn’tC.could,couldn’tD.werepossibleto,couldn’t

题目详情
The climbers ______ reach the top of the mountain, but because of the sudden snowstorm, they ______ come down.
A.could, weren’t able to
B.were able to, couldn’t
C.could, couldn’t
D.were possible to, couldn’t
▼优质解答
答案和解析
B