اقتباس:
المشاركة الأصلية كتبت بواسطة kameljijeli
1- cost of production : production cost
2- the manager of potable water in Paris region : it is not correct. you should write : the manager of the company which is in charge of potable water management
3- 137 litres per day : 137 liters per day ()
hope it helped you. you can review it again and again to detect more mistakes..
good luck . KAMEL
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Thank you very much (بارك الله فيك