Giúp với ạ! Pleaseeeee 1. My best friend, John, ___ his motorbike every Saturday. has washed washes is washing has been washing 2. Mary ___ a bath at the moment. Can you call back in half an hour? is taking takes has taken took 3. ___ TV for the last two hours? You should stand up and go out for a walk. Do you watch Are you watching Did you watch Have you been watching 4. We ___ Kate since she moved to our neighborhood. had known have known knew have been knowing 5. My brother and I ___ football almost every day last summer. played play are playing have played 6. John ___ at the factory long when he was made a manager. hadn't been working wasn't working didn't work hasn't been working 7. I wanted to say goodbye to Jerry, but he ___. has already left already left had already left had already been leaving 8. Before she retired, my grandma ___ go for a run every morning before work. was used to got used to use to would 9. There isn't much point in trying to save electricity, ___? is it isn't it isn't there is there 10. No one seems to care about the environment, ___? does he are they is he do they 11. This time tomorrow, I ___ a meeting with my colleagues. am having have will be having will have had 12. They ___ some extra staff next week. are going to employ employ will have employed have employed *YÊU CẦU CHÍNH XÁC