______quite recently, most mothers in Britain did not take paid work outside the home.

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问题 ______quite recently, most mothers in Britain did not take paid work outside the home.

选项 A、Until
B、Before
C、From
D、Since

答案A

解析 before,from和since与quite recently连用,不符合语法;before quite recently一般要与过去完成时连用;from(since)quite recently一般要与现在完成进行时连用。until用在否定句中表示“直到……才”之意,例如:It was not until the beginning of the century that man began to realize that it was the brain not the heart that was the center of mind.直到本世纪初,人们才逐渐认识到是大脑而不是心脏是思维活动的中心。
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