—Cathy, did you attend the lecture given by Mr Black last night? —No. I ______ a report at...
—Cathy,didyouattendthelecturegivenbyMrBlacklastnight?—No.I______areportattheoffice.A....
—Cathy, did you attend the lecture given by Mr Black last night? —No. I ______ a report at the office. A.was writing B.wrote C.had written D.have been writing
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