2. 外语
  3. What a pity! Considering his ability and experience, be ______ better.

What a pity! Considering his ability and experience, be ______ better.

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问题 What a pity! Considering his ability and experience, be ______ better.
选项 A、needn’t have done
B、must have done
C、couldn’t have done
D、couldn’t have done
答案D
解析 考查“情态动词+完成体”的用法。might+have done表示“本可能做却没有”；must+have done只用于肯定句中，表示对过去情况的肯定推测，意为“想必，一定”；needn’t have done一般用于否定句表示“本不必做的事情却做了”；couldn’t have done表示“不可能做了某事”。此句中表示从他的能力和经验考虑，他本可能做得更好，故选D。
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