Question

【题目】____my grandpa is over 80 years old, he still looks strong and healthy.

A. AlthoughB. BecauseC. Unless

Answer 1

【答案】A

【解析】

句意：虽然我的爷爷80多岁了，他看起来仍然很强壮、健康。

although虽然，引导让步状语从句；because因为，引导原因状语从句；unless除非，引导条件状语从句。由句意可知although符合要求，故选：A。