Bing found the following results
  1. modal verbs - The difference between "can be" and "may be"?

  2. CAN, COULD, BE ABLE TO | Learn English

  3. Modal Verbs: Definition & Usage Examples | Grammarly Blog

  4. Can Be | Definition & Meaning - Merriam-Webster

  5. sentence meaning - Correct usage of " Can be " - English …

  6. 'Can be' or 'could be' - English Language Learners Stack Exchange

  7. can - Oxford Learner's Dictionaries

  8. Could vs. Can—What’s the Difference? - LanguageTool

  9. 'can' and 'could' | LearnEnglish - LearnEnglish - British Council

  10. The verb 'be' | LearnEnglish - British Council