I ______ on a maths problem when he telephoned me early this morning.A、had worke

游客2025-07-24 13

问题 I ______ on a maths problem when he telephoned me early this morning.

选项 A、had worked
B、was working
C、have worked
D、have been working

答案 B

解析

转载请注明原文地址:https://www.tihaiku.com/zcyy/4174884.html

相关试题推荐

随机试题

最新回复(0)

______inthetrafficjam,hegottoschoolverylatethismorning.A、Havingcaug