.He spent more than twice as much time on the problem _____ I spent on it .
Although my grandfather is in his eighties, he is still as ______ as a young man and hates sitting around doing nothing all day.
He was robbed last night, but he didn’t have much on him then.
Letterboxes are much more ____ in the UK than in the US, where most people have a mailbox instead.
After I arrived at her house, she showed me into ____________.
The workers are so _____ to the noise of the machine that they don’t even notice it during their work.