I noticed in your answer key for the grammar lesson 4.4 what I think are a couple of mistakes.
Question #1 - It's raining. I put "Es regnet" which is how I have seen it in other German resources. But your answer key has it has "Es regent"
Question #2 - Sie _______(schreiben) ein Buch. The English translation under the sentence has "They are writing a book." So I answered it as "Sie *schreiben* ein Buch" based on the translation word of "they". Your answer key uses the singular "she" response of schreibt.
Just thought I would point those two out as they confused me by the answers which I think I had right.
Lesson 4.4

Fuzzy
April 3, 2008

(deleted)
September 10, 2008
Hi Fuzzy,
I apologize for the confusion. Thank you for pointing that out. Of course you are right. "Es regnet" is the correct answer. If the translation is "they" then it should be
"Sie schreiben ein Buch". For the singular pronoun "sie/she" the answer would be "Sie schreibt ein Buch".
Thank you for letting me know and all the best for your German learning.

Gabe-W
August 30, 2013
They could of got it wrong!

bikeophile
September 1, 2013
Um Gabe, that should be "They could have gotten it wrong."

Paul-Weber
September 2, 2013
Hi Gabe,
Those entries are from 2008 so it has been corrected in the lessons since. We leave old entries so users are able to search for grammar topics to receive additional information they are interested in.
Gruß
Paul