When you are learning a foreign language, _______, you must forget your own lan

题型：不详难度：来源：

When you are learning a foreign language, _______, you must forget your own language.

A．at the first

B．first of all

C．in first

D．first at all

答案

B

解析

本题的含义是当你学习一门外语的时候，首先你必须要忘记你自己的语言，first of all表示首先的意思，故本题选B。