Correct the prepositions in the sentences below. In some sentences, there are no mistakes.

Write the correct word in each gap. Write ok if the sentence is correct.

Start a career at marketing if you enjoy creativity and strategy. [ ]

At the age of 30, she found passion and purpose in her work. [ ]

Most high school students are on pressure because they have to pass the exams to enter the university. [ ]

Mr Franklin is in charge at our class. [ ]

By the end of the game, all the children had been covered in mud. [ ]