It was not until 1920______regular radio broadcasts began.A、whichB、whenC、that

游客2024-07-19 56

问题 It was not until 1920______regular radio broadcasts began.

选项 A、which
B、when
C、that
D、what

答案 C

解析本题考查句型。本句为强调句型，用that引导，故选C。

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