Tina has three-month-old cat. She likes it very much.A. /B. aC. anD. the

问题补充：

Tina has three-month-old cat. She likes it very much.

A. /

B. a

C. an

D. the

答案：

A. /

(答案→)B. a

C. an

D. the

解析：本句的意思是“缇娜有一个三个月大的猫。她很喜欢它。”此处的冠词表示数量“一个”，所以AD没有此意，故排除；又因为three是辅音音素开头，故用a。所以本题选B。