问题
选择题
---Would you like to go bike riding with us tomorrow? ---Sure, ____ I am busy.
A．since
B．unless
C．when
D．until
答案
答案：B
本题是不完整的回答，根据两句子的意思，可知答案为B
搜题请搜索小程序“爱下问搜题”
---Would you like to go bike riding with us tomorrow? ---Sure, ____ I am busy.
A．since
B．unless
C．when
D．until
答案：B
本题是不完整的回答，根据两句子的意思，可知答案为B