100% sure.
should keep tongue position of t, do not realease tongue. 100%su
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Yes, thats what I noticed too when I listen to audio
-同学小薇-
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10/27/2011 postreply
18:10:55
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i do not know. My english tutor taught me long time ago.
-beautifulwind-
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10/27/2011 postreply
18:13:07