Fill in the blanks with "do/ don't/ does/ doesn't/ am/ is/ are"

Task 1:  Fill  in  the  blanks with  "do/  don't/  does/ doesn't/  am/is/are" 
Question  13  [513485]:  Linda  _______often  play the  guitar.
Question  14  [513486]: ________they  take  a taxi  to  school  every  morning?
Question  15  [513487]:  _________  Anna  and  Daisy visit  their  old  teachers  on  winter  holidays?
Question  16  [513488]:  ____________  water  boil  at  100 degrees  Celsius?