非谓语.求讲解.（ ）map dated back to about 3000B.C.A.The oldest knownB.Known as the oldestC.It was the oldest knownD.Known to be the oldest为什么不能选BC?

非谓语.求讲解.（ ）map dated back to about 3000B.C.A.The oldest knownB.Known as the oldestC.It was the oldest knownD.Known to be the oldest为什么不能选BC? 求非谓语动词语法讲解 求大神讲解非谓语的用法 非谓语从句讲解 非谓语动词讲解 语法填空非谓语动词求讲解视频（我是广东高考生的） 非谓语动词的讲解 高中英语非谓语从句怎么讲解?谢谢! 怎么讲解英语中的非谓语动词? 英语非谓语的用法讲解? 帮我讲解一下非谓语动词! 求非谓语动词的讲解和习题人教版初中范围内 一道非谓语题目.求讲解.Have you ever dreamed of（ ）a terrifying shadowy figure chasing you down an endless corridor?A.there to be B.there beC.there beingD.there having为什么?求逐项分析和语法讲解! 谁能帮我找一下非谓语动词.讲解和习题. 英语非谓语动词怎么讲解更容易 给初中生讲解非谓语动词如何把握一个限度 非谓语题目,求讲解.（ ）in the fog,we were forced to spend two hours in the woods.B.LosingC.LostD.Having lost求逐项分析!但为什么不能选B和D呢? 【非谓语】求讲解!Able-bodied people just don't realize how difficult it is（ ）good jobs.C.for disabled people gettingD.for disabled people to get我也选D,但是还是有点糊涂.为什么不选C?C项的getting让我想起非谓语、伴