问题标题:
【Shedidn'tmind___allhersparetimeto___thesickoldman.A.todevote;helpB.devoting;helpingC.devoting;helpD.todevote;helping请问为什么】
问题描述:

Shedidn'tmind___allhersparetimeto___thesickoldman.

A.todevote;helpB.devoting;helping

C.devoting;helpD.todevote;helping

请问为什么

倪礼真回答:
  B.   mind+doing.   sparetimeto中to是介词,+doing.
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