问题
选择题
— What ________?
— Li Ming fell in the mud.[ ]
A. happen
B. happened
C. happens
D. happenings
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— What ________?
— Li Ming fell in the mud.[ ]
A. happen
B. happened
C. happens
D. happenings
答案：B