What worried the child most was____to visit his mother in hospital.答案是his not being allowed ,his not having been allowed是否同样正确?

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What worried the child most was____to visit his mother in hospital.
答案是his not being allowed ,his not having been allowed是否同样正确?

是正确的 not having...是过去完成进行时 这句子本身是个过去式 那么用过去完成进行时 时态上没错 意思上也没错