State whether the main verb is transitive or intransitive 
1. The Manager improved the performance of his works.
2. The students arrived late yesterday.
3. We removed the logo immediately.
4. Some countries refused to cooperate with these rules.
5. A strong policy has reduced the number of cases.
Answer 
1.Transitive 
2. Intransitive 
3. Transitive
4.Transitive
5.Transitive