问题
选择题
We do a lot interesting things science class. [ ]
A. on , in
B. for , on
C. of , in
D. an , on
答案
答案：C
搜题请搜索小程序“爱下问搜题”
We do a lot interesting things science class. [ ]
A. on , in
B. for , on
C. of , in
D. an , on
答案：C