19. What a pity! Considering his ability and experience, he    better.

A. could have done B. must have done C. couldn't have done D. needn't have done

19.   A考查情態(tài)動詢。句意：真遺憾！考慮到他的能力和經(jīng)驗，他本來可以做得更好的。could have done過去本來能夠做某事卻未做；couldn't have done過去不可能做了某事； needn't have done本來沒有必要做某事卻做了； must have done過去一定做了某事。根據(jù)句意可知選A。

題目來源：2015全品語法快練高中英語新課標 > 訓(xùn)練23 情態(tài)動詞和虛擬語氣

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