题干
There is ____________ "u" and ____________ "n" in the word " number".
A：a, an
B：an, a
C：/; an
D：a, /
答案(点此获取答案解析）
A
There is ____________ "u" and ____________ "n" in the word " number".
A：a, an
B：an, a
C：/; an
D：a, /
