―Isn’t it hard to drive downtown to work?
—Yes, that’s why I to work by train.
A. have been going
B. have gone
C. was going
D. will have gone
网友回答
(答案→)A. have been going
B. have gone
C. was going
D. will have gone
解析：前者问：“开车去市区很难吗?”后者说：“是的，那就是我坐火车去上班的理由。”显然坐火车去上班的动作发生在过去持续到现在并将持续下去，应用现在完成进行时。