1.When did you come to China?
In 1999.I___ in Beijing since then
A lived B have lived C am living D live
2.Is ____ here?
No.Tom and Jack have asked for leave
A anyone B everyone C someone D none
选什么,为什么
B. 这是关于现在完成时的.与现在完成时连用的状语有since+时间点,for+ 一段时间等. 很明显.then指代的是1999.故选B. 延伸一点就是与for+一段时间和how long连用的词,只能是延续性动词.since不论是短暂性动词或延续性动词皆可. B. 如果你有留意老师上课的话,你就知道是选B.老师上课前经常这么问. 根据意思来,每一个人都到齐了吗?...