单词拼写。 1. It's not very ______ (方便的) to pay by cash. 2. This Chinese square table is a very valuable piece of ______ (家具). 3. My uncle got ______ (订婚) to a beautiful girl last Sunday. 4. The house stood ______ (空的)for a while. 5. Faced with a new ______ (挑战), the scientists are working day and night. 6. His father was ______ (沉溺于) to drugs. 7. You will find the Bird's Nest ______ (设计) in an unusual way. 8. I love the writing ______ (风格) of this great writer. 9. We paid a vist to a beautiful park, ______ (座落于) on a river bank. 10. The company's head office is in the US, but it has ______ (分支机构) all over the world.