Ответ:

Решение:

  1. What do you suggest I do? — a You should have indeed!
  2. Why don't you study more? — e That's easier said than done!
  3. So how did you do? — d Pretty well!
  4. I should have tried harder. — b Of course.
  5. Could you hold the line, please? — c I would study more if I were you.

Ответ: 1-a, 2-e, 3-d, 4-b, 5-c.