3Choose the correct form of the verb to be. 1. Tiny was/were at home yesterday. 2. There was/were a lot of sheep on the farm. 3. The weather wasn't/weren't rainy last autumn. 4. Were/was you in the mountains last month? - No, I wasn't/weren't. 5. The cow's eyes was/were big and kind. 6. Where was/were they three days ago? 7. It was/were time to go to bed.

Решение:

• 1. Tiny was at home yesterday. (Tiny - единственное число)
• 2. There were a lot of sheep on the farm. ('sheep' здесь множественное число, хотя пишется так же как единственное)
• 3. The weather wasn't rainy last autumn. (weather - единственное число)
• 4. Were you in the mountains last month? - No, I wasn't. ('you' может быть как единственным, так и множественным числом; 'I' - единственное число)
• 5. The cow's eyes were big and kind. (eyes - множественное число)
• 6. Where were they three days ago? (they - множественное число)
• 7. It was time to go to bed. (It - единственное число)

Обоснование: Выбор между 'was' и 'were' зависит от числа подлежащего. 'Was' используется для единственного числа, 'were' - для множественного. В отрицательных формах добавляем 'not' (wasn't, weren't).