Помогите пожалуйста!Выберите правильную форму инфинитива для глагола, стоящего в скобках:

The Rector of the University is supposed (to speak)at the conference now.
to have spoke
to be spoked
to be speaking
Dr Moss is known (write) a lot of articles about this disease.
to write
to be written
to have written
They are thought (go) away two weeks ago.
to have gone
to go
to be going
Steve is known (help) them to solve a problem when they were in trouble.
to have helped
to be helping
to help
Peter is known (to leave) for Paris last month.
to have left
to leaving
to be left
Professor Jones is known (live) in Egypt for a long time.
to have been living
to be lived
to be living
James is expected (make) a report at the seminar next Tuesday.
to have made
to be made
to make
She is considered (be) a good pharmacist.
to be been
to be
to have being
This is likely (to happen) if we do not change the conditions.
to happened
to happen
to have happened
This exam is considered (be) the most difficult in the session.
to be
to have being
to be being
Steven is sure (to pass) the exam tomorrow.
to pass
to be passed
to have passed
He is believed (work) at a difficult problem now.
to have worked
to have been worked
to be working
They are known (make) a new discovery a month ago.
to have made
to make
to be making
He is expected (manage) the clinic himself.
to manage
to be managed
to being managed
She is said (be) at the polyclinic now.
to being
to be
to have been
She is supposed (work) in the laboratory tomorrow.
to be worked
to have been working
to work
The delegation is reported (leave) London tonight at 11 p.m.
to have been leaving
to leave
to be left
He is likely (to write) a doctoral thesis now.
to be writing
to have been writing
to writing
The experiment is supposed (to complete) successfully two weeks ago.
to be completing
to have been completed
to compl