John's pronunciation needs A improve B improving C to improve D improved

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John''spronunciationneedsAimproveBimprovingCtoimproveDimprovedJohn''spronunciationneedsAimproveBimprov

John's pronunciation needs A improve B improving C to improve D improved
John's pronunciation needs A improve B improving C to improve D improved

John's pronunciation needs A improve B improving C to improve D improved
B need doing sth =need to be done 表被动
John的发音需要提高

B ( need 作实义动词时,物作主语,后接动词ING形式)