Donna Summers - Funky Town tab

Hi i'm Hugo and this is my first tab and i'm 13 years old so please rate my
tab ;) if u dont your an asswipe
[ Tab from: http://www.guitaretab.com/d/donna-summers/150395.html ]
this song is easy (thats why i chose it)
               RIFF 1
 e|-----------------------------------|
 B|-------------------------10--9-----|
 G|----9--9--7--9--------9---------9--| 
 D|----------------7--7---------------|
 A|-----------------------------------|
 E|-----------------------------------|
           RIFF 2
 e|-----------------------------------|
 B|-----------------------------------|
 G|-------------------------10--9-----|
 D|----9--9--7--9--------9------------|
 A|----------------7--7---------------|
 E|-----------------------------------|
           RIFF3
     THIS CHORD HERE I DONT KNOW BUT ITS SHAPED LIKE A D CHORD
 e|--------------3--------------------|
 B|-----------------4-----------------|
 G|--------------3--------------------|
 D|-----------------------------------|
 A|-----------------------------------|
 E|-----------------------------------|