They are waiting_______.A.at the doctor B.at the doctor's C.in the doctor D.in doctor's

问题描述:

They are waiting_______.A.at the doctor B.at the doctor's C.in the doctor D.in doctor's

在职业后面加's的话有表示该职业的就职场所的用法哦,例如doctor's 就有医院的意思. 而at the doctor在语法上就没...at the doctor 没有意思(必须要加动词如look,yell等) at the doctor's 在医院(即医生工作之地)选择B