Tom has been absent for two days．Do you know what to him?
A. has happened
B. would happen
C. was happened
D. had happened
网友回答
(答案→)A. has happened
B. would happen
C. was happened
D. had happened
解析：考查时态，句意：汤姆已经缺勤两天了。你知道他发生了什么事吗？可知从句描述的是现在已完成的动作，故用现在完成时态，选A。