He spent as much time as he could _____ the child.A.teaching B.to teach C.teach D.for teaching
问题描述：
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
答
A
as much as he could 这才是一个组合 尽他所能