Find the mistake

[Mr Mosaad El Hegazy]

-he took my book an i took his by mistake
2-Genetically modified crops are said to be not completely healthy
3-we arrived in time thanks to his good driving
4-the car i bought last week needs to be mended
5-he was giveen a present on his birthday
6-please let me know what is going on
7-you need 'nt take the medicine any more .you are better than yesterday
he has a lot of money , doesn't "t he
9-Was the letter sent yesterday?
10-ten workers were trapped in the mine while prospecting for minerals

thanksssssssssssssssssssssssssssssssssssssssssssss s
galaxyy