dress warmly,_________ you'll catch a cold 请详细说明选项的区别

问题描述:

dress warmly,_________ you'll catch a cold 请详细说明选项的区别
a.or else b.or rather c.on the contrary c为什么错了啊

a.or else 不然的话 (和 otherwise 一样)
b.和 c.意思在此不适用
on the contrary,=> 恰恰相反