问题补充:
I had meant to meet you at the airport this morning, but I was too busy for I a report.
A. wrote
B. have written
C. was writing
D. had written
答案:
A. wrote
B. have written
(答案→)C. was writing
D. had written
解析:考查时态:句意:我本打算今天早上到机场接你,但我太忙,因为我正在写个报告。说明写报告是今天早上正在做的事情,用过去进行时,选C。