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.