1 a Not many animals have a single recipe for life.
b The builder's helper was responsible for carrying all the heavy materials.
c Hello, dear ! I haven't seen you for ages. What have you been up to?
2 a The end-of-year exams are designed to gain all the students in the year group.
b It's enormus stupidity to marry someone you've known for only week!
c There was a terrible smell coming from the polluted river.