--- How many students are there in your school?
--- There are 2,000 students here .
A. first of all
B. in all
C. after all
D. at all
网友回答
A. first of all
(答案→)B. in all
C. after all
D. at all
解析：考察介词短语辨析。A首先，最重要的是；B共计；C终究，毕竟；D根本，全然；句意：—你们学校有多少学生？—共计2000个学生。根据句意说明B正确。