Question

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Exercise 4 (p. 32): Underline the errors and write a
correction.
Assignment
Irrigation
Irrigation management is an interesting field, especially in places where
water supplies are low. Irrigation experts have various tasks such as taking
soil samples, checking existing water tables, and projecting the amount of
rain for the future. These people usually get his degrees from irrigation
institutes. Them study many years in order to become familiar with the
various tasks involved in her profession. For some of they, a job with local
water authorities is a good place to begin his career. Others prefer to find
jobs as contractors, working independently to aid farmers with our
irrigation needs. Whatever the job, irrigation experts are becoming
increasingly important. Water is a precious commodity, and they cannot
be taken for granted.

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