Cover of the textbook On Screen B2+ - Student's Book

The key answer of exercise 7

The key to exercise solutions in chapter 4c - Grammar in use for the textbook On Screen B2+ - Student's Book with authors Virginia Evans and Jenny Dooley from Express Publishing

Chapter

Exercise

Question

Rewrite the sentences. Use must, can't, may or should.

Answer

... may be having financial problems.
... can't have apologised to Amy.
... must be at her office right now.
... may have forgotten about the party.
... should have arrived by now.