选择I Can't find book,Who( took it away)?为什么填它?.而不填did take it away

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选择I Can't find book,Who( took it away)?为什么填它?.而不填did take it away
选择I Can't find book,Who( took it away)?为什么填它?
.而不填did take it away

选择I Can't find book,Who( took it away)?为什么填它?.而不填did take it away
为什么要用一个do动词呢?
实际的take代替了句型中的do.
类似的,就好象Be动词一样
比如某些情况下可以说
be yours
但如果涉及到具体某人或某物
It is yours
用is代替了be