下列物质中，不属于合金的是（ ）
A：不锈钢
B：氧化汞
C：黄铜
D：生铁
撩 ____ ____ ____
畔 ____ ____ ____
哨 ____ ____ ____
荚 ____ ____ ____
— What a good ___________ you've given me! Thanks a lot.
— My pleasure.
Can Alice play football? ____
