In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.

Example Input: I think that it is not always fair because not all the students work in the same way and with the same responsibility .
Example Output: I think that it is not always fair because not all students work in the same way and with the same responsibilities .

Example Input: We do n't usually study these subject very deaply .
Example Output: We do n't usually study these subjects very deeply .

Example Input: In addition the technology on which these mass transport systems function are based primarily on non-conventional sources of energy .
Example Output:
In addition , the technology on which these mass transport systems function is based primarily on non-conventional sources of energy .