Cover of the textbook Spark 4 - Workbook

The key answer of exercise 4

The key to exercise solutions in chapter Grammar Bank 7 for the textbook Spark 4 - Workbook with authors Virginia Evans, Jenny Dooley from Express Publishing

Question

Rewrite the sentences using must, can't or may.

  1. I'm sure he isn't at home.
  2. I'm sure he is at work.
  3. Perhaps he is preparing for a meeting.
  4. I'm sure he isn't on a break.
  5. I'm sure she's a student.
  6. Perhaps she is in the library.
  7. Perhaps she is doing research for a project.
  8. I'm sure she has been working hard.

Answer

  1. He can't be at home.
  2. He must be at work.
  3. He may be preparing for a meeting.
  4. He can't be on a break.
  5. She must be a student.
  6. She may be in the library.
  7. She may be doing research for a project.
  8. She must have been working hard.

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