A-A+
According to the rules of the factory you mus
问题详情
According to the rules of the factory, you mustn"t ask for leave ______ you have a doctor"s note.
A．unless
B．on condition
C．though
D．until请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：unless意为“如果不，除非”；on condition that意为“如果”；though意为“尽管”；until意为“直到……才”。根据题意选A。
