點解你睇埋D咁奇怪既野既?!

searching teaching material for my tutorial la....his parents request for interesting lesson...

喔~~~你幫人補習....但係教BIO?!

yaaaaaaa

你唔係都好多年冇讀?!仲記得?!

biology not difficult gei

係咩?!

哈哈哈… 睇完呢個video反而令我覺得光合作用好複雜…

睇完呢個video反而令我覺得光合作用好複雜… +1

ooooo the ecosystem dance

lol