问题补充：
The mother believes that Johns stupid, but its different of Mary; shes just lazy.
A. in spite
B. in the case
C. in the course
D. in case
答案：
A. in spite
(答案→)B. in the case
C. in the course
D. in case
解析：in the case of 意为：就……来说，至于； in case of 意为：以防万一
