This kind of exercise is most _______, and therefore is a good test of your students’ ability.

Today, more Chinese people speak English and China may have the _____number of English speakers in the world．

— What should I pay attention to when I write an application letter?— Try to be _________. Don’t let out information unnecessary to the company unless it favors your getting the job.

If you are ________about Australian cities，just read the book written by Dr. Johnson.

I think he’s just going to deal with this problem ____day.