change these sentences to the passive voice: 1.the man must pay the money now 2.the pupils made the chairs last month 3.he has to send the package nơ 4.they can't put these things here 5.mary types the letters very quickly 6.you mustn't use that machine after 5.30 p.m 7.you should keep these flowers in a warm sunny place 8.many people speak english all over the world