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30.10.2020 17:09

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5. Circle all the suitable modal verbs in the text. There may be more than one correct choice. Mark Stewart and Jonathan Pierce, candidates for this year’s Nobel Prize in chemistry, announced today that they (1) may/could/need give up their research on a new generation of antidepressants. Professor Pierce said: ‘We (2) can’t/ have to/ mustn’t bear the thought that our work (3) must/should/might be used to harm, rather than help people. This is what we fear happened with our research on anaesthetics. We (4) could/were able/may produce a chemical substance that (5) shall/could/might alleviate migraine pain by 80%. However, we’ve now been informed that the results of our research (6) may/can/could have been used to produce a poison gas. This shows how careful scientists (7) ought/have/must to be with disclosing their work. We probably (8) shouldn’t/needn’t/couldn’t have published the results of our research. In future, we (9) must/will/can be more careful because it’s our duty to think about how scientific data (10) should/must/can be used’.