Ответ:

  1. We'll get home and then we'll have something to eat. We'll have something to eat when we have got home.
  2. I'll finish marking the exams and then I'll tell you your results. I'll tell you your results as soon marking the exams.
  3. You'll be travelling across the Sahara next week so remember to wear lots of sunscreen! Remember to wear lots of sunscreen while Sahara next week!
  4. They'll show Titan at the cinema and then they'll release the DVD. They won't release the DVD before they show Titan at the cinema.
  5. My science exam starts at ten tomorrow morning. At ten past ten tomorrow, taking my science exam.
  6. Let's watch the space documentary before we have supper. Let's have supper watched the space documentary.
  7. I'll send out all the invitations before lunchtime. By lunchtime, all the invitations have all the invitations.
  8. Do some revision and then I'll give you a test. I won't give you a test until some revision.
  9. When you visit us, we'll have moved into our new house. We'll have moved into our new house by you visit us.
  10. We'll get some more information and then we'll make a decision. Let's make a decision once got some more information.