Exercise I

  1. "Can I borrow your newspapers for a moment?" "Certainly."
  2. I really like that girl. She's so beautiful.
  3. "What's your age?" "I'm nineteen years old."
  4. Beware of that snake. It's venom is so dangerous.
  5. Jack finished his work early.

Exercise II

  1. Don't use that cup. It's mine.
  2. I like your car.
  3. John has found his pen but Jane hasn't found hers.
  4. They have betrayed their countries but we will never betray ours.
  5. Don and I will defend our team whereas John and George will defend theirs.