选择题
----he will leave for Beijing. A.It will not be long before B.It is before long that C.It is before long D.It was before long that
选A,固定句式:it will (not)be long before..........
____A____he will leave for Beijing. A.It will not be long before B.It is before long that C.It is before long D.It was before long that it will not be long before表示不久以后将会... 很显然句意表达一个未发生的事情，所以现在时和过去时是不行的，用将来时才正确。 他不久以后将去北京。
答：最好要大写 Peking Duck详情>>
答：B 被动语态，be found to do. A中的made与found均为过去分词，冲突！详情>>
问：hArd work 和hArd--working有什么区别
答：一个是名词 一个是形容词撒详情>>
