1.An enquiry into last year's explosion at the Amcon Refinery that killed 25 workers concluded that it ____ if the refinery had installed a hazard warning system, as safety officers had recommended. 2.There is some evidence to suggest that Jon Ricci ____ as a secret agent during the 1960s, although even after the end of the Cold War this was never confirmed. 3.Mateus Weber, chief executive of the Schools Examination Authority, said: “The newspapers claim that the improving results show that exams ____but we are absolutely certain that standards have remained the same.” 4.Mr Rosi will return to court on 31 January to hear his sentence, having been warned yesterday that he ____ a long period in prison. 5.Messi ____ given them the lead just before halftime, but he shot straight at the goalkeeper, who made an easy save. 6.For centuries the flooding of the Nile was very important because, without it, the people____ able to grow crops in the dry desert. But global warming has changed the traditional patterns of agriculture in this part of the world.

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