One common issue in speaking activities is that students often produce one or two simple utterances in the foreign language and spend the rest of the time chatting in their（） .

One common issue in speaking activities is that students often produce one or two simple utterances in the foreign language and spend the rest of the time chatting in their（） .
A.Second language
B.First language
C.Native language
D.Gesture language
正确答案：Native language