I’m expecting a pet dog for long but mom has no time to buy for meA. itB. oneC. thisD. t

问题补充：

I’m expecting a pet dog for long，but mom has no time to buy for me．

A. it

B. one

C. this

D. that

答案：

A. it

(答案→)B. one

C. this

D. that

解析：考查代词的用法。it指代提到的某物；one指代可数名词，指同类中的一个；that指代不可数名词。句意“我一直都想要一只宠物狗，但是妈妈没时间给我买（一只）。”故选B。