Active or passive? Fill the gaps with the correct tenses

In the year 122 AD, the Roman Emperor Hadrian ______(visit) his provinces in Britain.

• has visited
• visited
• was visited
• has been visited

On his visit, the Roman soldiers told him that Pictish tribes from Britain's north _____ (attack) them.

• attacked
• were attacked
• had attacked
• had been attacked

So Hadrian _____ (give) the order to build a protective wall across one of the narrowest parts of the country.

• gives
• is giving
• gave
• was given

After 6 years of hard work, the Wall _____ (finish) in 128.

• has been finished
• had been finished
• finished
• was finished

It _____ (be) 117 kilometres long and about 4 metres high.

• was
• has been
• is
• had been

The Wall _____ (guard) by 15,000 Roman soldiers.

• has been guarded
• were guarding
• is guarded
• was guarded

The soldiers watched over the frontier to the north and checked the people who _____ (want) to enter or leave Roman Britain.

• want
• wanted
• had been wanting
• are wanting

There were small forts. These _____ (call) milecastles because the distance from one fort to another was one Roman mile (about 1,500 metres).

• are called
• were called
• have been called
• will be called

If the Wall _____ (attack) by enemies, the soldiers ran to the nearest milecastle for help or lit a fire.

• attacks
• attacked
• is attacked
• was attacked

This fire _____ (can / see) by the soldiers in the milecastle.

• was could see
• could see
• can be seen
• could be seen