Correct the errors with propositions 1. A number of customers complained for the after-sales service 2. Delegates experienced a number of problems related at the broadband connection at the conference centre 3 Alexandra was able to make good use of her knowledge in foreign languages. 4. Many people took part to the anniversary festivities 5. I must congratulate you for your excellent work 6 I hope my letter will be taken in consideration 7. Th inspector drew the management’s attention in some problems in the workshop 8 There is an urgent need of fresh water supplies in the region 9Have you seen the new advertisement of Lotus shampoo?