Question

【题目】Many students show their love for teachers _____ giving cards and flowers on Teachers' Day.
A.to
B.by
C.at
D.with

Answer 1

【答案】B
【解析】许多学生通过在教师节送卡片和鲜花来表达他们对老师的爱。by凭借……；通过……，作介词，后接V-ing形式，故选B。