Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best pletes the sentence.________ well prepared you are, you still need a lot of luck in mountain climbing.A.HoweverB.WhateverC.No matterD.Although
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A解析考查疑问词。前半句是感叹句，however表示“无论怎样”，相当于no matter how。B项用来感叹名词；D项后面需要跟句子。