问题
选择题
— What happened to Tom?
— He was crossing the street ____ a motorbike hit him from behind. [ ]
A. while
B. when
C. until
D. because
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— What happened to Tom?
— He was crossing the street ____ a motorbike hit him from behind. [ ]
A. while
B. when
C. until
D. because
答案：B