Needs improvement
Sent an email after I signed up and received no reply. You can't readily determine your progress in each chapter. System commonly gets hung up where you have to watch things over again. Definitely takes at least 20 hours!
美国
Sent an email after I signed up and received no reply. You can't readily determine your progress in each chapter. System commonly gets hung up where you have to watch things over again. Definitely takes at least 20 hours!