In our school students are _____ according to how much they know and how old they are.
Scientists have to work hard to keep _____ with modern discoveries and developments.
He didn't _____ what I read because his mind was on something else.
He thought this was the first pair of shoes that had fitted him _____.
I feel sure that _____ qualification, ability and experience, you are abundantly suited to the position we have in mind.