问题
单项选择题
No discount will be granted（）you place an order for more than 1000 dozen.
A.if
B.unless
C.whether
D.butfor
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
No discount will be granted（）you place an order for more than 1000 dozen.
A.if
B.unless
C.whether
D.butfor
参考答案：B