问题
选择题
We knock _____people’s doors, and they usually give us some candy ______ a treat.[ ]
A. on, to
B, at, to
C. on, as
D. on, on
答案
答案：C
搜题请搜索小程序“爱下问搜题”
We knock _____people’s doors, and they usually give us some candy ______ a treat.[ ]
A. on, to
B, at, to
C. on, as
D. on, on
答案：C