UnScramble this Word: r e t h i?

Questions

Literature - In 'Romeo and Juliet', who said 'I have a faint cold, fear thrills through my veins'?

Literature - In 'Romeo and Juliet', who says 'make the bridal bed in that dim monument where Tybalt lies?

Literature - In 'Romeo and Juliet', who says 'what must be must be'?

Literature - In one of Donald Horne's novels, as what was Australia dubbed?

Literature - In one of Donald Horne's novels, which was 'the lucky country'?