Найти видовременные формы глаголов и их инфинитивThey often discuss their business

1. They often discuss their business matters with clients.
Discuss (to discuss) - Present Simple Active Voice.
2. Some branches of business will develop fast in the sphere of international cooperation.
Will develop (to develop) - Future Simple Active Voice.
3. We were in Canada last week and we purchased some new equipment there.
Were (to be) - Past Simple Active Voice.
Purchased (to purchase) - Past Simple Active Voice.
4. Now we have brought it to Russia.
Have brought (to bring) - Present Perfect Active Voice.
5. The lawyer had given me investment advice before I asked him about it.
Had given (to give) - Past Perfect Active Voice.
Asked (to ask) - Past Simple Active Voice.
5. Witnesses for the defense are giving their evidence now. 
Are giving (to give) - Present Continuous Active Voice.