Put the verbs in brackets in the required form

1 Oh, stay upstairs until he ____________________ (leave). You can’t risk _________________________ (spot) here.
2 Jack went to his bedroom without ___________________________ (notice).
3 The children prefer ____________________ (watch) TV to ___________________ (read).
4 He gave up _________________ (gamble) when he was 40 because of ______________ (be) broke.