1) Gold ________ (discover) in California in 1848. a) was discovered b) has been discovered c) was been discovered 2) Forty per cent of the world's oxygen _______ (produce) currently in the Amazon river valley. a) was been produced b) is been produced c) is produced 3) Roberto is in the hospital. He _______ (treat) for a bad burn on his arm. a) is treated b) is being treated. c) is been treated 4) In my country, the prices of some products _________ (control) by the government today. a) are controlled b) were controlled c) were being controlled 5) Other prices ________ (determine) by how much consumers are willing to pay. a) are determined b) were being determined c) has been determined 6) Richard Anderson, a 60-year-old former astronaut, ___________ (inform) several years ago that he couldn't be a test pilot any longer. a) has been informed b) was informed c) was been informed 7) Anderson was told by his superior that he _______ (relieve) of his duties due to his age. a) is being relieve b) was being relieved c) has been being relieved 8) Frostbite may occur when a person's skin ________ (expose) to extreme cold. a) was being exposed b) were exposed c) is exposed 9) Jenny Wiles ______ one of the best athletes of her generation a) is believed to be b) is going to be believed c) is believed to being 10) The awards _______ at Hippodrome Centre on Sept. 22. a) will be presented b) are being present c) is said to be presenting 11) A lot of money _______ on this year's publicity campaign. a) are being spent b) has been spent c) is believed to spend 12) Generally speaking, bankers ________ high salaries. a) are understood to earn b) are being earned c) are earned 13) The government's decision _______ this afternoon. a) is going to be announced b) is believed to be announced c) is announced 14) Some questions _______ about the company's business strategy. a) was being raised b) has been raised c) are being raised 15) The batteries in your phone ______ a high environmental cost. a) are known to have b) is known to have c) are known to be have 16) Scientists have been trying to develop better batteries, and now ________ that fruit might be the answer. a) it is been reported b) it has been being reported c) it is being reported 17) Jackfruit, the world's biggest fruit, and durian, which ________ the smelliest fruit, could be the solution. a) is considered to be b) is considered to have been c) is considered to being 18) They ________ in an Australian laboratory. a) are studying b) are being studied c) are been studied 19) These fruit ________ to have amazing energy storage. a) have been found b) are founded c) are being founded 20) ______ that one day, we'll be able to grow our batteries on trees! a) It is hoped b) It will be hoped c) It was being hoped

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