Aug 01, 2018 - 03:50 PM
It seems konnten and the imperfekt of other modal verbs is not introduced until level 5, session 20. So you may want to revise that exercise in session 12.
Aug 02, 2018 - 02:18 PM
It seems that entire "write the phrase you read" exercise in session 12 was copied an pasted from the review session 21. It is fine for session 21, but not for session 12.
Aug 03, 2018 - 11:05 AM
Thanks a lot for reporting gsandler, we'll make sure this phrase doesn't appear before it is introduced. Keep up the good work!