1) Is there a lot of litter on the beaches? - общий
2) Some of it was left by people and
some was brought by the water, wasn't it? - разделительный
3) Do we or they pollute themselves with cigarettes, alcohol and junk
food? - альтернативный
4) What is very dangerous for people, wildlife and the environment? специальный
5) Who has made
predictions? - вопрос к подлежащему