1) The air bag ( invent) in 1973 a) was invented b) were invented c) is invented d) are invented e) have been invented f) will be invented 2) A hundred years ago radios and telephones ( make) in this factory. a) was made b) have been made c) were made d) are made e) is made f) will be made 3) I think someday intelligent life ( will/ discover) on other planets. a) have been discovered b) was discovered c) were discovered d) is discovered e) will be discovered f) are discovered 4) The machine must (switch) off after use a) is switched b) be switched c) are switched d) has been switched e) was switched f) have been switched 5) The car (break) so you need to take this to the mechanic's a) is broke b) is break c) has been broken d) is broken e) has been broke f) was break 6) My digital camera (steal). I'm going to report this to the police. a) is stolen b) was stolen c) are stolen d) were stolen e) have been stolen f) has been stolen 7) YouTobe settings ( zostały zmienione) a) has been changed b) have been changed c) have changed d) changed e) are changed f) were changed 8) Our photos on Facebook (post) by Adam. a) were post b) was posted c) was post d) were posted e) have been posted f) has been posted 9) The door (open) with a key. a) were opend b) was opened 10) Dano mi nowy pendrive: a) I was given a new pendrive b) I have been given a new pendrive

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