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Complete the sentences with the correct passive form of the verbs.1)In my opinion more research into the new pills(ought to/to do)before people started buying them.2)Their sleep(can/to disturb)by any noise.3)I really doubt that wild animals(can/to hold)in the zoos safely.4)It is evident that the results of the exams( must / to check)before they were revealed.5)Some doctors have an opinion that not all health myths (should / to dismiss)completely.6)Do you think most smokers( could / to encourage) to stop smoking by using medicine?7)They (might / to lie) to by the food industry for a long time about healthy products they need.8)Some modern fashion styles (may / to misunderstand) in the past.