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What a pity!Considering his ability and experience,he _____b

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What a pity!Considering his ability and experience,he _____better.
What a pity!Considering his ability and experience,he _____better.
Aneed have done Bmust have done Ccan have done Dmight have done选的是D但是为什么不选C?
本题考查虚拟语气的用法.might have done 表示:“本来可以做得更好而实际没有” 意为:“太遗憾了,考虑到他的能力和经验,他本来可以做得更好.” 表示对过去事实的推测,可能性较小,相当于could have done sth . {如果想表示一个可能性,而不是事实,就要用may.【高级英语实践P22】}所以排除C.