1. Please identify the use of the correct preposition.
http://www.englisch-hilfen.de/en/exercises/structures/prepositions_sentences.htm
2. Please identify the use of the correct phrasal verb.
http://www.englisch-hilfen.de/en/exercises/structures/phrasal_verbs_sentences.htm
I think "on" can be the answer for question no.10. How do you think?