Question

【题目】It won’t be quite a long time ______ your son is back, so don’t be worried.

A．that B．since C．before D．until

Answer 1

【答案】C

【解析】句意：不会很长时间你儿子就回来了，因此不必着急。去掉it be，句子为：your son is back won’t quite a long time.，很明显句子错误，故不是强调句；根据句意，选before。