问题
选择题
— has Bob been collecting stamps?
— Since he was 8 years old. [ ]
A. How often
B. How long
C. When
D. How much
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— has Bob been collecting stamps?
— Since he was 8 years old. [ ]
A. How often
B. How long
C. When
D. How much
答案：B