1: Герундий и его функции в предложении.
2: Collecting this material took us a month. - подлежащее.
3: My job was collecting the material часть сказуемого
4: Seeing is believing подлежащее и именная часть сказуемого
5: Nobody likes waiting дополнение
6: I do not like the idea of going there alone определение
7: She talked without stopping обстоятельство
8: I could not do anything without having been told about your own plans обстоятельство