问题补充：
The boy can speak English well, he’s only eight-year-old boy.
A. and, an
B. or, a
C. although, an
D. because, a
答案：
A. and, an
B. or, a
(答案→)C. although, an
D. because, a
解析：句意：这个男孩英语讲的非常好，虽然他只是一个8岁的男孩子。although是尽管，虽然的意思；eight-year-old八岁的，是元音音素发音，故用an.
