Not until ________a third time ________that h...

Not until ________a third time ________that he had given birth to the reading system for the blind called Braille.

A． Louis Braille tried；he announced

B． did Louis Braille try；he announced

C． Louis Braille had tried；did he announce

D． had Louis Braille tried；had he announced

高三英语单项填空中等难度题查看答案及解析

Not until ________a third time ________that he had given birth to the reading system for the blind called Braille.

A．Louis Braille tried; he announced

B．did Louis Braille try; he announced

C．Louis Braille had tried; did he announce

D．had Louis Braille tried; had he announced

高三英语单项填空中等难度题查看答案及解析

Not until he questioned the manager several times ___________ that the engineer-in-chief had gone to an important meeting.

A. did he tell     B. he told          C. was he told      D. he was told

高三英语单项填空中等难度题查看答案及解析

I knew I could not finish the homework _____.

高三英语单项填空简单题查看答案及解析

Was it not until you began to work —— how much time you had wasted?

A.did you realize　　　 B.that you realized　　 C.did you not realize　　 D.that you didn’t realize

高三英语单项填空中等难度题查看答案及解析

Not until he got to the factory _______that he had lost his papers.

高三英语单项填空中等难度题查看答案及解析

Not until he walked into the classroom　　that he left his dictionary at home.

A. did he find                B. had he found

C. he had found            D. he found

高三英语单项填空中等难度题查看答案及解析

Not until he arrived home _____ he find that this wallet had been stolen.

高三英语单项填空简单题查看答案及解析

Not until ________ the house _________ that he had left the keys inside.

A. he left; realized he　　 B. he left; did he realize

C. did he leave; had he realized　　 D. he had left; did he realize

高三英语单项填空困难题查看答案及解析

I wondered why John kept it a secret. It was not until he 　　　　　　 three times that he told me the truth.

A. asked　　　 　　　 B. was asking

C. had asked　　　　 D. had been asked

高三英语单项填空中等难度题查看答案及解析