Ответ:

  1. Look how beautifully this dancer is moving.
  2. What composer created the music for this film?
  3. My brother is a good pianist; he’s had several concerts already.
  4. Who is the most famous British writer? — William Shakespeare, I think.
  5. I think you’ll be a businessman. You count so fast and Maths is your favorite subject.

Ответ: 1 — b; 2 — c; 3 — a; 4 — a; 5 — c.