Модуль (Module) 2c № 9. ГДЗ Английский язык Spotlight 9 класс Ваулина. Помогите поставить глаголы в нужную форму.

Put the verbs in brackets into the -ing form or the infinitive without to.
 
1      I think Tony’s in the next room. I heard him
............... (talk) on the phone a moment ago.
2      Harry felt something.................... (run) across
his hand, but he didn’t see what it was.
3      Mum could hear Kate.................. (sing) in the
shower while she made breakfast.
4       We stopped to watch an artist................. (draw)
portraits in the street.
5       I see the postman................... (deliver) the
mail every day.