Grammar: Choose the Right Article

Some grammar for today: Choose the Right Article.

Choose the correct choice from three to complete the sentences.  Then click 'check answers' at the bottom of the page to find out how well you've done!

This exercise is more suited for intermediate and advanced speakers.  In my opinion the article is not as important for beginners, because it does not usually effect communication. 

There are more important factors for beginners to concentrate on.