http://www.englishclub.com/grammar/verbs-questions-tag.htm
http://learnenglish.britishcouncil.org/en/word-street/snowdon-scene-1-language-focus
http://www.shertonenglish.com/resources/es/questions/questions-tags.phpÇ
etter-english.com/grammar/questiontags.htm
http://www.englishgrammarsecrets.com/questionstags/exercise3.swf
http://www.englishgrammarsecrets.com/questionstags/exercise4.swf
http://www.englishgrammarsecrets.com/questionstags/exercise6.swf
https://sites.google.com/site/bluebloc/grammar/question-formation/echo-questions
My English Blog 
Hello. I was happy to read about tags and it was very helpful. I’ll like to be informed of new post. Thanks .
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I’m glad you liked the post. If you follow the blog you’ll receive an email every time I post something. 😊
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i really read many times and understood well but where can i use them. can you send us taste paper can,t you
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wow! thanks form these.
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Please I need some more information on English grammar. thanks
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Thanks for information
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marvelous. i’ve liked it!
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good job it is most useful for us tks
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