Complete the text with articles where necessary ( romans invaded britain in ad 43 and,chasing ancient britons along ( thames ,they came to ( place where it was easy to cross.they built ( garrison there -and london was born.they also erected ( bridge over ( river.( garrison became ( major trading post.later,( suffered neglect and ( whole area was raided by ( vikings .in ad 886alfred ( great drove out ( raiders, ( bribge was repaired and ( city prospered again.( hundred years later,( vikings returned but king ethelred sailed up (, attached ropes to london bridge, headed downriver and pulled it down.

The Romans invaded Britain in AD 43 and,chasing ancient Britons along the Thames ,they came to  the first place where it was easy to cross.They built a garrison there -and London was born.They also erected a bridge over the river.The garrison became a major trading post.Later,(9) suffered neglect and the whole area was raided by the Vikings .In AD 886Alfred the Great drove out the raiders, the bribge was repaired and the city prospered again. hundred years later,the Vikings returned but King Ethelred sailed up theThames, attached ropes to London Bridge, headed downriver and pulled it down.