Why not take_______ umbrella with the si
题型：选择题
问题：
Why not take_______ umbrella with the sign "Made in china"? It is_______ useful one.
A．an; an
B．an; a
C．a; an
D．a: a
Why not take_______ umbrella with the sign "Made in china"? It is_______ useful one.
A．an; an
B．an; a
C．a; an
D．a: a