عزيزى الطالب تعالى و أدخل و اسأل و افهم مع درس خصوصى

[الزهراءء]

find the mistake

1-a lot of people invent their money in the stock

2- Arab scientists had a great effect in drilling the western civilization many years ago

3- A coronation of factors may be responsible for the increase of cancer in our country

4- soldiers were carved round the city in order to prevent any possible invasion