I don't know ( )A.the reason why can beB.why the reason may beC.what the reason can be D.what the reason may be请说明理由

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I don't know ( )A.the reason why can beB.why the reason may beC.what the reason can be D.what the reason may be请说明理由

I don't know ( )A.the reason why can beB.why the reason may beC.what the reason can be D.what the reason may be请说明理由
I don't know ( )
A.the reason why can be
B.why the reason may be
C.what the reason can be
D.what the reason may be
请说明理由

I don't know ( )A.the reason why can beB.why the reason may beC.what the reason can be D.what the reason may be请说明理由
答案是 D ,其原因是这是语气和逻辑的问题.
问题的要点在于 may be 和 can be 的区别.
may be 是疑问性语气,也就是说,something may be,but also may not be （有可能,但也许不可能）
因为句子主语 I don't know （我不知道） 表示不肯定,因此选 may be 是正确的.

C

D
what作know的宾语和先行词。

选C
这句话是 what can be the reason ( 我不知道这个原因是什么) 的倒装
reason 提前 就成了 what the reason can be
如果正着写你懂倒装肯定就没问题了
你说答案是D，答案印错了，希望帮助到你，欢迎采纳O(∩_∩)O~

c

I don't know. “i don't know you know i don't know 英语翻译You know where I come from You know my story You know why I'm standing here Tonight Please don't go Don't be in a hurry I'm here to make it clear Make it right Well I know I've acted foolish But I promise you no more I've finally found th What t( ) is it?I don't know.I don't have a watch. sorry,I don't know. i don`t know much I don't really know. 英语；I don't know I don't know miss I don't know him. I don't know now 翻译 i don't know So know,I don't I don't know her i don't know anything I don`t know how to have fun.(同义句） I don`t know how to have a good time.I don`t know how to()( I don't have a w____.I don't know the time It's a cat.I don't know （）name.