answer up to

• • 听见叫名字就答应；对…做出反应(或回答)：

    At the roll call, the students answered up to their names.

    点名时学生们听到自己的名字都一一应到。

  • 对…敏捷做答，对答如流：

    Little Tom could always answer up to every question.

    小汤姆对每个问题往往都能对答如流。