这是一道英语单选题；——I am afraid I can't pass the exam!----You won't _____ you work hard from now on .A.when B.if C.unless D.after 欢迎各位积极参与回答，Many thanks！
问题描述：
这是一道英语单选题；——I am afraid I can't pass the exam!
----You won't _____ you work hard from now on .
A.when B.if C.unless D.after
欢迎各位积极参与回答，Many thanks！
答
worry？
答
Take it easy,nothing serious.
答
填unless .意思是；从现在起努力学习否则的话就得挂科