4的(de)
possessive particle
6汉语 (Hànyǔ)
Chinese language
9呢(ne)
(question particle for subjects already mentioned)
12她是谁?(Tā shì shéi?)
who is she?
13你是哪国人?(Nǐ shì nǎ guó rén?)
Which country are you from?
14他是你同学吗?(Tā shì nǐ tóngxué ma?)
Is she your classmate?