Question

Concentration is _ by alertness. Effective speaking _ on effective listening. Economic growth _ attitudes and lifestyles. The environment has always _ in control of our destiny. 1. help,will help,helps,helped 2.depends,depend,depended,depending 3.change,will change,changes,changed 4.has,have,had,having

Answer 1

cbse papr right!! :)
1.helped
2.depends
3.change
4.been
u hv mistakenly written wrong option for 4.