Cover of the textbook New Headway Upper-Intermediate - Workbook

The key answer of exercise 9

The key to exercise solutions in chapter 10 - Language focus for the textbook New Headway Upper-Intermediate - Workbook with authors Liz Soars, John Soars and Paul Hancock from Oxford University Press

Question

Underline the correct answer.

Answer

  1. shouldn't have
  2. may have
  3. 'd have; could have; might have; 'd have
  4. must have
  5. might; couldn't have
  6. should; might have