3.Each of the following sentences contains one error. Underline and correct it
     1. She drinks a lot of mineral waters in a day.
     2. You shouldn't run or walk careless around the lake.
     3. There are a large, modern bathroom in the house.
     4. I like studying history and i find this subject is very interesting.
     5. Mr. Pike works in a hospital for five days a week.
4.Rewrite each of the following sentences so that it means the same.
     1. Tuan likes reading book because it is useful.
     -> Tuan find...
     2. Mary't go to school yesterday because of she sickness.
     -> Because Mary ....
     3. She is interested in watching television.
     -> She likes...
     4. The Nile is the longest river in the world.
     -> No river...
     5. There are 28 students in my class
     -> My class...