问题
选择题
Li Lin is doing his homework in the classroom. _______, a man comes in. [ ]
A. usually
B. at once
C. always
D. suddenly
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Li Lin is doing his homework in the classroom. _______, a man comes in. [ ]
A. usually
B. at once
C. always
D. suddenly
答案：D