临走时，老师嘱咐我们要互相照顾，有问题及时联系他。

Línzǒu shí, lǎoshī zhǔfù wǒmen yào hùxiāng zhàogù, yǒu wèntí jíshí liánxì tā.

Before leaving, the teacher told us to take care of each other and contact him in time if there were problems.