【题目】The machine might break down someday in the future, _____, you can dial this number for help.
A. in that case B. in whose case
C. in which case D. in what case
在线课程【答案】C
【解析】考查固定短语。在未来的某一天，这台机器可能会发生故障，在这种情况下，你可以拨打这个号码寻求帮助。in which case在这种情况下，是固定短语，所以选C。