Mr. Leslie, who _____ in Taiyuan for three years in the 1980's, is now a well-know lawyer in London. [ ]

A. has worked

B. worked

C. was working

D. would work

以下各项配制都不是一件合格的插花。其中哪项，只要去掉其中某种花的一部分或全部，就可以成为一件合格的配制( )

A．四枝苍兰，一枝玫瑰，一枝百合，一枝牡丹。

B．四枝苍兰，一枝玫瑰，二枝海棠，一枝秋菊。

C．四枝苍兰，二枝玫瑰，二枝海棠，一枝秋菊。

D．三枝苍兰，一枝百合，一枝牡丹，二枝秋菊。