It was not until 1920 regular radio broadcast began.A．whileB．whichC．thatD．s
题型：不详难度：来源：
It was not until 1920 regular radio broadcast began.| A．while | B．which | C．that | D．since |
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答案
| C |
解析
| 众所周知，当时间状语由until/till引出时，如果谓语动词为非延续性动词，则要用否定式，表示“直到……才……”。本句的正常结构应为：Regular radio broadcast didn’t begin until 1920.如果强调本句的时间状语，则要把not和until...一起放在句首，可以构成：Not until 1920 did regular radio broadcast begin.（注意表示否定意义的副词位于句首，要倒装），如果使用强调结构，则可构成：It was not until 1920 that regular radio broadcast began. |
举一反三
| I’m wondering he expects will win the gold medal in Men’s Single. |
We felt amazed at the use the waste bottles.| A．they had made | B．they had made of | | C．they had put | D．they had put to |
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He didn’t move the music went on,but got up it ended.| A．when;while | B．while;when | | C．while;while | D．when;when |
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I really don’t know next step.| A．how to do | B．how to do with | | C．what to do | D．what to deal with it |
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I did put the broom behind the door .| A．where it belongs | B．which it belongs to | | C．what it belongs to | D．that it belongs |
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