Complete the text with one word which best fits each gap.(Заполните текст словами, лучше всего подходящими по смыслу)
Have you ever been on a flight during 1)______the nice guy sitting next to you suddenly becomes abusive or even violent towards the airline staff? f the answer is yes, then you've witnessed a case of air rage, the term 2)________ to describe violent or aggressive behaviour on planes.3)________ airline staff have occasionally been known to attack passengers, most cases of air rage involve passengers insulting or attacking flight attendants. But what 4)_______ people behave in this way? Experts believe it may partly be due to the lack of oxygen and the low air pressure inside planes.5)______ likely cause is alcohol, as people are usually 6)_______ to drink what they want on planes and often have 7)______ more than is advisable. The flight attendants' union believes that airlines should control alcohol consumption more strictly and that all flight attendants should be made 8)_______ attend courses on how to deal with air rage.