"Ten pes zase sedí u dveří."

Translation: The dog is sitting by the door again.

[vor23]

This multiple choice question came up three times during my lesson--twice in a row!

[BoneheadBass]

I've noticed that, if I get an exercise wrong, it keeps coming back until I get it right. If it's the last exercise in the set, I get it two or more times in a row.

UPDATE == More recently, I've noticed that as I move up the tree, there are a LOT of reappearances within my practice sessions. Earlier on, exercises only seemed to come back if I got them wrong... now they come back for no apparent reason, sometimes several times in one session. Maybe the tech folks need to do some tweaking.

[Vixg]

Is the genitive here used because of "u"?

[BoneheadBass]

Yes.