老师在课堂上经常提到这本参考书。

The teacher often ___refers to this reference book in class.

接待员让我去财务部门咨询付款问题。

The receptionist ___referred me to the finance department for payment inquiries.

如果你不确定单词的意思，可以查阅字典。

You can ___refer to the dictionary if you're unsure about the word's meaning.