Where is Jimmy?- He is_______work. He is busy_______his monthly report. in/obout5/50Mark the letter A,B, C or D on your answer sheet to indicate the corect answer to each of the following question Where is Jimmy?- He is_______work. He is busy_______his monthly report.in/ about to/ throughat/with on/ forGiải thíchĐáp án C Be at work: đang làm việc Busy with: bận rộn với công việc gì đó