2A:thank goodness,you are here. what ___you ?B:traffic jama keepss b is keeping c had kept d kept为什么选D是什么意思

问题描述:

2A:thank goodness,you are here. what ___you ?
B:traffic jam
a keepss
b is keeping
c had kept
d kept
为什么选D是什么意思

a.keeps是keep的"单三式",说明是现在时.
b.is keeping是现在进行时
c.是过去完成时,表示过去做过的对现在有重大影响的事.
d.一般过去时.
这里是说"--谢天谢地,你来了,什么卡住了你?--堵车"
堵车发生在过去,A ,B不能选,并且没有对现在产生重大影响.故选D.