grammer and "n" "l"

0I have a few question, grammatical and pronouncing ones.02br
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00"Everyone see" or "everyone sees", which one is correct?02br
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00when you say words like "help", "article", "chill", "well", "welcome", "special", "example", do you touch the roof of your mouth when pronouncing the "l"? Please give me a clear answer.02br
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00Also, just bringing up another question, what about "n", when you say "n" in a word, do you touch the roof of your mouth too?02br
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00Words such as "aunt", "answer", "thing", cuz when I say words with "ng", like "thing", I never touch the roof of my mouth, and when I say some sentences faster, like "Can I ....", "When you...", I tend not to touch the roof of my mouth when I say "can" and "when" either. Another word, "sentence" for example, I touch the roof once for the "t" in the whole word when pronounced, for the other two "n", I sort of make the "n" sound, but I don't actually touch the roof. 02br
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00Can native speakers please help, I am not sure if I am too fuzzy over it, or I really have been missing the accuracy all the time. I just would like to know how ppl normally pronounce them. 02br
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00So for the N sound, do u think just make the nasal "n" sound is sufficient? or I have to touch the roof of my mouth every time when it appears in a word(except ng)?02br
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00cuz words like "sentence", I touch roof once for the "t" only.02br
00"pronounce", i touch roof for the first "hard" n only02br
00"plan", i touch roof slightly and off, and keep the nasal sound, but not touching it at the end.0-