The boy go in to school. Может так?
1) am writing
2) am not drinking
3) go
4) don't go
5) isn't reading
6) is playing
7) is he playing now?
"When I walked in, someone was playing the piano, two or three people were dancing"
To call - called, to cut - cut, to steal - stole, to be - was/were, to do - did, to mend - mended, to chase - chased, to want - wanted, to arrive - arrived, to climb - climbed, to walk - walked, to follow - followed, to crash - crashed, to pass - passed, to ask - asked, to stop - stopped.