题目

Dear friends ,life is short .So do not keep the box of your love and friendship closed up _______your friends are gone .Speak cheering words while their ears can hear them and while their hearts can be made happier
A until B though C if 答案给的是A 我选的是C 不太明白,

提问时间：2021-01-02

答案

选A.until
因为句子前面讲了,不要怎样怎样,后面从句跟的肯定是一个前提或者条件来修饰.
另外句子的结构前面是用的do not do sth,后面虽然也可以用 if 来连接,但是整句话的意思就不对了,所以选A