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

1.will have learnt 2.will have arrived 3.had conducted 4.have never heard 5.began 6.ran 7.had made 8.was driving 9.buys 10.are you going 11.have started 12.consists 13.are understanding 14.hasn't come 15.was switched off 16.is,stopped 17.is usually watered 18.was invented 19.have you seen 20.will have written