It was not until then that I came to know that knowledge _______ only from practice.

单选题

It was not until 1938 in Britain () the first Holidays with Pay Act was passed.

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单选题

It was not until yesterday_they decided to re- open the business talk.( 5.0) (5.0) ( 5.0)

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单选题

It was not until 3: 00 pm______the secretary found the missing report. （2.0）

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多选题

Not until all the fish died in the river ______ how serious the pollution was. ( )

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单选题

It was not until 2016____the company opened a branch office in this city.(2.0)

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