Choose the correct word or phrase underlined in each sentence.…

Choose the correct word or phrase underlined in each sentence. 1. That can't be right! (I don't believe / I’m not believing it! 2. Carol can't swim today. She has/is having a cold. 3. See you in the morning. I leave/I'm leaving now.4.What do you do/are you doing? If you drop it, it will explode! 5. Stop doing that, Billy! You are /You are being very silly. 6. I drive/I'm driving! You can sit in the back with Martin. 7. What do we eat/are we eating this evening? I'm really hungry! 8. You're a great cook! This cake tastes/is tasting wonderful. 9. Where do you go/are you going? I haven't finished speaking to you! 10. Chemistry is hard. I am not understanding/I don't understand it.