Let's Learn English By Your Heart! :) 

1. Identical to - exactly the same as sth
2. Jealous of - feel envious because you don't have sth
3. Insisted on - say very firmly that sth must be done
4. Keen on - interested in/like
5. Kind to - behave in a friendly/helpful way towards sth
6. Impression on - have a strong impact on sb
7. Join in - participate
8. Increase in - the number, level or amount of sth becomes greater