Oh,mo God!My watch keeps the wrong time these days.
问题描述：
Oh,mo God!My watch keeps the wrong time these days.
You should get it repaired ——it stops working.
A.if B.since C.before D.though
怎么B和C都有！我该听谁的……
答
选c
根据句意,“天啊,我的手表这些天一直都不准确”,“你应该在它停止工作之前赶紧把它修好”.