ГДЗ граматика Англійська мова 7 клас Мітчелл

Circle the correct words. 

1. Where is my biology book? I can’t find it. 2. My sister couldn’t speak French two years ago but now she can. 3. A: Can you run fast, Robert? B: Yes. I can run fast now, but I couldn’t five years ago. 4. We couldn’t receive any emails yesterday because there was something wrong with the Internet.