Помогите пожалуйста,британский язык,заблаговременно спасибо)Поставьте глаголы, стоящие в скобках,в

Помогите пожалуйста,британский язык,заблаговременно спасибо)
Поставьте глаголы, стоящие в скобках,в правильной форме. 1) When the sellers quote prices they usually (to state) on what terms they (to deliver) the goods. 2) They also state at what prices the goods ( to deliver) 3) If the goods (to offer) on fob terms the price will cover the cost of the goods and transportation expenses to the port of shipment 4) A lot of documents (to involve) in business transactions.
5) Among insurance documents there (to be) insurance policies and certificates.
6) It gives me great pleasure (to introduce) our guest.
7) Commercial invoices generally (to contain) some information.
8) The WTO (to establish) in 1995.