Помогите с английским, пожалуйста.

3.Complete the sentences with the correct -ing or infinitive form of the verbs in brackets. [5 points]

1 Doctors say that ______________ is very bad for you. (smoke)

2 I forgot ______________ my geography book to school today. (bring)

3 Everyone needs ______________ some food for the party tonight. (cook)

4 Our mum knows when we are pretending ______________. (study)

5 We are ______________ forward to volleyball practice this afternoon. (look)