They stood chatting together as easily and naturally as_____.(2008)A.it could beB.could be

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They stood chatting together as easily and naturally as_____.(2008)

A.it could be

B.could be

C.it was

D.was

请帮忙给出正确答案和分析,谢谢!

热搜:在Sb2S3,HgS,Bi2S3,As2S3,SnS等物质中,不能溶于Na2S溶