【题目】—You know, Bob, the mid-term exam is approaching.
—You are telling me! We______, preparing for it.
A.have been working hard ;B.will be working hard
C.were working hardD.had worked hard
在线课程【答案】A
【解析】
考查时态。句意：——你知道吗，鲍勃，期中考试快到了。——早就知道了!我们一直在努力工作，为此做准备。根据“the mid-term exam is approaching.”可知，鲍勃他们从过去就开始准备期中考试，一直到现在，并且持续到考试，所以用现在完成进行时态。故选A。