填空题
When the Roman army came to Britain, the first thing they did was to build ______.
填空题
Where did the Roman soldiers stay at night?
填空题
What else did they have for security around the enclosure where they stayed at night?
填空题
Why did each soldier always carry two stakes during their marching?
填空题
How long was the extension of the road built by the Roman by the end of the 3rd century?
填空题
In order to have an easy control of the native Britons, where were forts usually built?
填空题
In which part of Britain were the earliest forts concentrated?
填空题
How large is the fort the speaker is going to discuss?
填空题
How many gateways did a typical fort have?
填空题
Whose house was the most southerly block of the fort?