(ÅäÇÃ) Hormones are chemicals made in the body that regulate body functions or (_____).
1) achieving specific tasks
2) achieved specific tasks
3) achieve specific tasks
4) to achieve specific tasks
(¼ö´É) Human survival rates in serious motor vehicle accidents depend mostly on (_____) the driver or passengers were wearing their seatbelts.
1) whether
2) that
3) which
4) by