MRS SMITH HAS A CUTE BABY.IT OFTEN SMILES AT PEOPLE ()

Mrs Smith has a cute baby.It often smiles at people()A friendly B lovely C happily D lively为什么说baby是It?后半句翻译成中文,是 它经常对朋友怎么样地笑.由此可见,括号中应填副词,A通常作形容词,B作形容词,D...都是副词啊谁告诉你有“ly”的就是副词？英语书上不都写着friendly是形容词吗？......