The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
Apartments in cities can be quite high. Renters are paying up to $1,000 per month for _______ bedroom apartment.
As is known to us all, _____ tiger is in _____ danger of becoming extinct.
This is _____ best kind of _____ pen you can get here.
How strange! These years my birthday always falls _____.
As _____ writer, he was _____ complete failure.