Choose the correct variant.

1. It was an unjustified attack ________ an innocent party.
1. of
2. on
2. His attitude ____________ the subject is very narrow-minded.
1. in
2. towards
3. The manager thanked the staff on behalf _________ the directors.
1. of
2. on
4. There is no need ___________ violence in any circumstances.
1. of
2. for
5. The reason __________ the accident is still to be established.
1. of
2. for
6. Conditions are much better but there is still room __________ further improvement.
1. for
2. in
7. The rise ____________ crime levels has been attributed to lower employment opportunities.
1. in
2. of
8. There was a public outcry in reaction ___________ the government’s proposals.
1. with
2. to
9. He has extensive knowledge ___________ the subject.
1. of
2. with
10. The teacher let them finish class early __________ condition that they arrived early the next day.
1. in
2. on