---What do you think of teaching , Bob? ---I find it fun and challenging. It is a job ___you are doing something serious but interesting
I’ve listened to Professor Smith’s talk about medicine,but I still haven’t got a good understanding of its key _________.
It was becoming increasingly _________ that he could no longer look after himself.
—She’s a lot older than you,isn’t she? —Fifteen years,to be _________.
There is more than __________ rain this year,so some parts of the country have been flooded.
Last year he started the film __________ of Bill Cronshaw’s bestselling novel.