24Because the world is geting warmer ,polar bear are in danger of becoming extinct.
25They closed the village school,as there weren't enough students.
26Although i really enjoyed the concert,the music was to loud.
27When he got a cream pie smashed in his face everyone laughed.
28While paul was walking to the bus stop he found somebody's wallet on the ground.
29After jackie is done with her chores,she will take out the trash.
30If you study for the test,you will do much better.