用适当的介词填空。 1. I want to eat a bowl ________ dumplings. 2. He goes ________ No. 5 Middle School. 3. I like some sugar ________ porridge ________ lunch. 4. How much ________ one hot dog? 5. It's time ________ school. 6. We live ________ Canada. 7. I have supper ________ the evening. 8. What's the matter ________ you, Tom? 9. Look ________ this picture. 10. He does his homework ________ a Wednesday morning.