vivianmontreal, 4 H' C. C5 }( e& e/ z1 x! RThank you so much. Although you have few mid-term exams next week, you still spend time to help me. I was impressed by your good heart. Please let me know if you think of something that I can help you.$ \. ^7 d# S8 R6 N7 ]( g
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MD4, 3 D9 m9 h P* Q- A" s$ V% F1 HThank you for your good suggestion.