Quest 2. Вставь правильную форму глагола в Present Simple или Present Continuous

Quest 2. Вставь правильную форму глагола в Present Simple или Present Continuous

1. My brother usually walks (walk) to school, but today he is taking (take) the bus.
2. "What are you doing (do) now?" "I am preparing (prepare) for my exam."
3. She never eats (eat) meat because she is (be) a vegetarian.