单选题 The argument between the two boys became so fierce that father had to ______ and tell them to behave.

【正确答案】 B
【答案解析】intervene干涉，介入；interpret解释，表演；口译；inherit继承；impart给予；传授，告诉。句意：两个孩子的争论太激烈了以至于父亲不得不干涉，叫他们老实点。