Prepositions: at, in, for, away, back

prepositions at in for away back
Look the photos and discuss these questions.
David's grandmother met Moscow.
When they arrived London, they decided they had too many servants.
The family took David's grandmother a walk the centre of London.
They told her to wait for them and then went .
They never came for her.
They took her to the Russian community east London.
When was the last time you swam the sea or a lake?
When was the last time you spent over $100 one day?
When was the last time you travelled train?
When was the last time you went holiday?
She worked a rich family.
During the First World War this family decided to move London.
We'll come back a few minutes.