List of irregular verbs - Grammar reference » Стр.159 (4-5)

4. Rewrite the underlined words in the sentences using can’t. 1. This fish can’t be fresh. 2. That coat can’t belong to you. 3. You can’t feel tired. 5. Choose the correct verbs. 1 – can’t be; 2 – can’t be; 3 – could be; 4 – might be; 5 – must be; 6 – could be; 7 – can’t be; 8 – could be.