помогите поставить слова в правильную форму( не с переводчика,там не правильно)

1.will have learnt2.will have arrived 3.had conducted 4.have never heard5.began6.ran7.had made8.was driving9.buys10.are you going11.have started12.consists13.are understanding 14.hasn't come15.was switched off16.is,stopped17.is usually watered18.was invented 19.have you seen20.will have written