单项选择题
Not until the meeting was over（）that he had made a mistake in his speech.
A.he realized B.did he realize C.hehas realized D.has he realized
单项选择题 Nobody believed him（）what he said.
单项选择题 Nobody（）to smoke in the cinema
单项选择题 No matter（）, the little sisters managed to round the sheep up and drive them back home safely.
