Compared with that article, this article is but not _.
I'm busy now. I'm sorry I can't help ____ the flowers.
In New Zealand, I made lots of friends ___ a very practical knowledge of the English language.
He will tell you _____ he expects will win such a match.
We should do more such exercises in the future, I think, _____ those we did yesterday.
The professor has written another book ____ of great importance to computer science.