问题
选择题
--How often do you attend the evening classes?
---_____, three times per week.
A.On the whole
B.On average
C.Little by little
D.In all
答案
答案:B
短语辨析。 A整体来说; B. 普通,通常; C. 逐渐地 D.总共,合计。句意:你多久上一次夜校课程?——通常每周三次。故选B。