One of the following sentences is () (2 points) A. After the monitor showed the students around the newly-built bus station, he said to the stationmaster, "I'm really sorry.

Analysis of test questions: "Lai" in sentence A is a respectful name for others, and you can't say yourself; B sentence "benefit a lot" refers to oneself, not others; C sentence "Please come to me for eye drops" is ironic and impolite to people. The expression of "I have known Yan for a long time" in sentence D is euphemistic and appropriate.

Comments: This question is not difficult, the meaning of the sentence is clear and easy to judge. Chinese learning should be combined with reality, combining classroom learning with extracurricular activities, and combining Chinese knowledge with language ability, which is the case in the practical use of language.