She said that she would never forget ________ the door and ________ her family ________ there as a surprise．A.opening…seeing…standB.opening…see…standingC.to open…see…standingD.to open…to see…standing
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A解析动词forget的用法是forget doing sth意思是“忘记曾经做过某事”。动词see的用法是see sb do sth意思是“看见某人做某事”。