find common error

1. I whistled thrice with full might and raise my arms towards the sky.

2. Science and religion are both necessary for man and for their outer and inner self respectively.

3. At certain seasons, some areas on Mars is subject to strong winds.

4.As an artist Raju is as good, if not better than Ramesh.

5. The scientists could not hardly complete all the experiments.

6. She cries all the time.

7. I could never repay the debt I owe to my place of study.

8. The learners are intended to read the sources at home.