____his telephone number ,she had some difficulty getting in
____his telephone number ,she had some difficulty getting in touvh with Bll选项见下
A.Having not known B.Not having known C.Knowing notD.Not knowing什么句型,语法有哪些点?
A.Having not known B.Not having known C.Knowing notD.Not knowing什么句型,语法有哪些点?
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你能帮帮他们吗