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It was not until 1920 regular radio broadcast began. A.while B.which C.that D.si

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It was not until 1920 regular radio broadcast began. A.while B.which C.that D.si

It wasnot until 1920 ________ regular radio broadcast began.

A.while

B.which

C.that

D.since

 

试题答案

答案:C

解析:

It is …that 为强调句型