1.do,want, want(глаголы чувственного восприятия типо видеть слышать нюхать не употребляются в континиусе)
2.plays,plays.
3.do, leave( хотя в этой ситуации было бы логичнее употребить past simple- when did you leave your house?)
4.do you do,do
5.are singing, are singing
1) what do you want? i want some tea 2) who is playing the drums? He plays the drums very well 3) when do you leave the house 4) what are you doing? i'm doing my homework 5) what are the boys singing at the moment? they're singing an old song