https://online2.tingclass.net/lesson/shi0529/0009/9808/21.mp3
https://image.tingclass.net/statics/js/2012
call sb. back
He never calls me back
回电给某人
他从不给我回电。
get back to sb.
You need to get back to me quickly on this.
稍后再联络某人
你一会得快速联系我。
get through to sb，
I always find it hard to get through to him.
He never answers his phone.
联络上某人
我发现总是很难联系上他，他从不回电。
