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Hespentasmuchtimeashecouldthechild.A.teachingB.toteachC.teachD.forteachingHespentasmuchtimeashecouldthechild.A.teachingB.toteachC.teachD.forteaching选A但为什么在情态动词后面可以用ing形式

题目详情
He spent as much time as he could _____ the child.A.teaching B.to teach C.teach D.for teaching
He spent as much time as he could _____ the child.
  A.teaching B.to teach C.teach D.for teaching
选A 但为什么在情态动词后面可以用ing形式



▼优质解答
答案和解析
A
as much as he could 这才是一个组合 尽他所能