It was not until 1938 _________ the first colour TV programme was broadcast.A．w_刷题宝

题干

It was not until 1938 _________ the first colour TV programme was broadcast.

A．which

B．that

C．when

D．on which

上一题下一题 0.64难度单项选择更新时间:2013-05-26 11:45:27

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