Question

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

Answer 1

1 helped
2 depends
3 will change or changed
4 been

Answer 2

Hope it helps mate.
.