----Mum it’s so hot and I am very thirty.-- Here’s the money Tom. Go and buy an ice

问题补充：

----Mum, it’s so hot and I am very thirty.

---- Here’s the money, Tom. Go and buy an ice ream.

A. you

B. me

C. yourself

D. myself

答案：

A. you

B. me

(答案→)C. yourself

D. myself

解析：本句话为祈使句，根据上下文，可以推断buy yourself ，为自己买！故选C