_____ you know smoking is bad,you should try to give it up

问题描述:

_____ you know smoking is bad,you should try to give it up
A.Though B.Before C.Now that D.Until
原因.

C 既然的意思
既然你知道抽烟不好,就应该戒掉
A 尽管 B 之前 D 直到
意思都明显不对