Ilearn/know chinese from chinese teaсhers. you are expected to join/attend your new courses. i was really embarrassed when i found out/knew what she's done. i'm going a karate course learnt/taught in japanese. i'm knowing/getting to know lots of japanese people.

i know chinese from chinese teaсhers.
 you are expected to attend your new courses.
 i was really embarrassed when i found out what she's done.
 i'm going a karate course taught in Japanese.
 i'm getting to know lots of Japanese people.

Один ответ неправильный. Вот втором:
you are expected to attend your new courses. 

А все остальное - я согласна)))