妈妈把最大的那块蛋糕留给了弟弟。

Māma bǎ zuìdà de nà kuài dàngāo liú gěi le dìdi.

Mom saved the biggest piece of cake for little brother.

他走之前留给我一封信，让我好好照顾自己。

Tā zǒu zhīqián liú gěi wǒ yī fēng xìn, ràng wǒ hǎohǎo zhàogù zìjǐ.

Before he left, he left me a letter telling me to take good care of myself.

请把会议室留给下午的团队使用。

Qǐng bǎ huìyìshì liú gěi xiàwǔ de tuánduì shǐyòng.

Please leave the meeting room for the afternoon team to use.