至急お願いします！下の文の主語と述語にあたる単語を教えてください！ 1. The Koala Bear is a very cute animal. 2. All Koala Bears live in the east of Australia. 3. Koalas carry their babies in their belly bags for six months. 4. Many people also do not know the number of Koalas is falling now. 5. The girl called Betty. 6. The girl called Betty was walking in the street. 7. Writing good English is not easy. 8. To make mistakes is human. 9. Time went by slowly. 10. He looks depressed this morning. 11. I want to go to Italy. 12. I handed him a card. 13. The element radium, discovered by the Curies, is probably the most remarkable substance in the world. 14. Driving in the fine country on a fine spring day is more pleasant than any other thing. 15. That Beethoven, who was so passionately fond of music, should cease to hear, seemed too cruel to be true.