The suspect is thought __________ left the country illegally.
having
to have
have
to be
By the end of last year, more than 1,000 houses __________ in the area.
were built
have been built
had been built
had built
The results __________ carefully __________ while the experiment was still in progress.
were / analysing
were / being analysed
had / been analysed
were / analysed
It is thought that the painting __________ during the 18th century.
was created
had been creating
has created
is created
The documents __________ already __________ when the mistake was discovered.
had / been signed
had / signed
were / signing
have / been signed
The issue __________ by the committee when new evidence appeared.
was being discussed
had been discussed
has been discussed
is being discussed
It is generally __________ that the exam was more difficult this year.
agree
agreement
agreed
agreeing
It has been __________ that the data was incorrect.
to discover
discovering
discover
discovered
All the tickets __________ before we reached the venue.
have sold
have been selling
had been sold
were selling
The documents __________ by the legal team at the moment.
are being reviewed
were being reviewed
have been reviewed
are reviewed
The bridge __________ for structural damage after the storm.
is being inspected
is inspected
has been inspected
was being inspected
The final report __________ by the time the manager arrived.
had been completed
was completed
has completed
has been completing