Never before______available for quick and easy access in so many different field

游客2024-08-15 52

问题 Never before______available for quick and easy access in so many different fields of study.

选项 A、so much free information were
B、has so much free information been
C、were so much free information
D、so much free information has been

答案 B

解析

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Whichthree-letterword,whenplacedinthebrackets,formstwodifferentwords;