Part 4
1 educational -> education
2 will be participated -> will participate
Part 5
1 ...why Freddy had dropped....
2 ...will be constantly tailored...
3 ...entering the contest....
4....left the car keys...
1 educational => education
2 bỏ be
Part 5
1 Susan wondered why she had dropped out of school the previous year
2 The school's curriculum will be constantly tailored to meet changes in society
3 In spite of only entering the contest for fun, he won first prize
4 If my father left the car key, we could pick him up at the station