问题补充:
They must be working because they have a lot of work to do yesterday.
A. any moment
B. at the moment
C. just a moment
D. the moment
答案:
A. any moment
(答案→)B. at the moment
C. just a moment
D. the moment
解析:句意:他们那时一定在工作,因为他们昨天有很多工作要做。any moment任何时候;at the moment 那时;just a moment 稍等一下;the moment(that)=as soon as从语境中可知,强调昨天那个时候,所以用at the moment。故选B。
考点: 考查名词短语的用法。