The doctor had to work for after twelve o'clock.
A. two more hours
B. two another hour
C. more two hours
D. another two hour
网友回答
(答案→)A. two more hours
B. two another hour
C. more two hours
D. another two hour
解析：句意：12点之后，医生还必须额外工作两小时。two more hours再多两个小时，故选A