Выпишите из следующих предложений сказуемые, определите их видовременные и залоговые формы, дайте неопределенную форму.
1) I bought this reference book in New York.
2) He was looking through the results of the tests when l came in.
3) The discussion was started with the review of our professor.
4) We have been staying in this town for five days.
5) The processing of marine products is highly mechanized now.