—How long is it you picked up your badminton training?
—It was not until my finance became better last December I started the training.
A. before; when
B. until; that
C. that; when
D. since; that
网友回答
A. before; when
B. until; that
C. that; when
(答案→)D. since; that
解析：考查强调句型和特殊句式。第一句是对“it be一段时间since…”自从…以来有多久了。这个句型的提问。第二空中的that与前面的it is构成强调句型。句意：你开始羽毛球训练多久了？—直到去年12月份我的经济情况好转我才开始训练。故D正确。