问题
单项选择题
______ quite recently, most mothers in Britain did not take paid work outside the home.
A.Before
B.Until
C.From
D.Since
答案
参考答案:B
解析: before意为“在……之前”;until意为“到……为止,在……以前”;from意为“从……到……”;since意为“自从……之后”。