问题补充:
You can’t see the now for they are having a meeting at the moment.
A. editor-in-chiefs
B. by an hour
C. by hour
D. each hour
答案:
A. editor-in-chiefs
B. by an hour
(答案→)C. by hour
D. each hour
解析:本题考查名词。by an hour一个小时;by hour以小时计;each hour每一小时。句意:你现在不能见他们,他们要在主编会议室开一个小时的会。