句型转换
1. Sam's mother comes from the USA.(改为一般疑问句并作肯定和否定回答)
_________ Sam's mother _________ from the USA?
Yes, she __________./No, she ________.
2. Her cousin lives in Singapore.(改为否定句)
Her cousin _________ _________ in Singapore.
3. Jim and Sam are from America.(改为一般疑问句并作肯定和否定回答）
— _________ Jim and Sam________ America?
—Yes, they _________./No, they _________.
4. My mother's favorite country is Australia.(对划线部分提问）
_________ your mother's favorite country?
