Помогите,пожалуйста,сделать английский!. Complete the sentences using the verbs in brackets

Помогите,пожалуйста,сделать английский!
. Complete the sentences using the verbs in brackets in Present Perfect Simple or Continuous.
1) Jane ________ (write) a letter to a magazine. She ____ (not finish) it yet.
2) Den __________ (look) for his pen-knife, but he _______(not find) it yet.
3) Nick _______(play) a computer game for two hours and he is still playing.
4) Greg _____ (wait) for Jenny in the downtown. She _____ (not arrive) yet.
5) Kate ________ (not finish) painting the flowers yet. She (work) on the picture for two weeks.