>a< and >an<

1) Lucy has_a_ dog. 2) Let's sing _a_ song. 3) Emily needs _a_ new desk in her room. 4) I need _a_ blue pen. 5) Ben has _an_ old bike. 6) Peter has _an_aunt in Berlin. 7) We listen to _an_ English CD. 8) She has_an_ exercise book in her school bag. 9) The speed of this car was 160 miles _a_ hour. 10) They finished _an_ unit.

Hi, Rebbecca!You did Excellent! Keep it up! Remember: \"A /AN\" is used to refer to a non-specific or non-particular member of the group. For example, \"I would like to go see a movie.\" Here, we\'re not talking about a specific movie. We\'re talking about any movie. There are many movies, and I want to see any movie. I don\'t have a specific one in mind. When you have a single, countable English noun, you must always have an article before it. Or you can try this link as well:http://esl.fis.edu/grammar/rules/article.htmTeacher MichelleHere are some corrections for you:1) Lucy has_a_ dog. >>Correct2) Let\'s sing _a_ song. >>Correct3) Emily needs _a_ new desk in her room. >>Correct4) I need _a_ blue pen. >>Correct5) Ben has _an_ old bike. >>Correct6) Peter has _an_aunt in Berlin. >>Correct7) We listen to _an_ English CD. >>Correct8) She has_an_ exercise book in her school bag. >>Correct9) The speed of this car was 160 miles _a_ hour. >>9) The speed of this car was 160 miles _an_ hour. 10) Theyfinished _an_ unit. >>10) They finished _a_ unit.