Find and correct a mistake in each sentence

Ex3. Find and correct a mistake in each sentence:
1. The boy was enough intelligent to solve that problem.
=> ___
2. The girl helped me with the needlework yesterday is my classmate.
=> ___
3. They asked their friends not play soccer in the road.
=> ___
4. Hanh is the same weigh as my sister.
=> ___
5. It is careless for you to leave your book on the train.
=> ___