企源知识库

If you happen to ________ my lost papers while you’re looking for your book， please let me know at once by telephone.
A、come across
B、come up
C、come to
D、properly
【正确答案】：A
【题目解析】：come across偶遇；无意中发现；句意：如果你在找书时偶然发现我丢失的文件，请立即打电话告诉我。