In the answers to chapter X number 6 is missing (the answer given is a repeat of the answer to number 4). I translated this as:

6. It began to fall under the table, but I seized it.
Ĝi komencis fali sub la tablon, sed mi kaptis ĝin.

Also, the translation of number 9 is given as:

la arabo skuis sian kapon kaj diris "ne".

But according to the text which covers "The article for the possessive adjective", shouldn't that be:

la arabo skuis la kapon kaj diris "ne".?