Question

—     is your grandmother?
—She is 80years old.

A．How

B．How old

C．How many

D．What

Answer 1

B

解析试题分析：句意：——你的祖母多大岁数了？——她80岁了。how old询问年纪多大了，how询问怎么样，how many询问数量多少，what询问什么。故选B。
考点：考查疑问词。