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?