问题

There is ____ “u” and _____ “r” in the word “number”.
A:a; a
B:an; an
C:an; a
D:a; an
B:an; an
C:an; a
D:a; an
正确答案是:
同类题型
It was not until she got home _______Jennifer had realized she had lost her keys.
He _____ his first wife soon after his graduation from university but _____ a month later. [ ]
do you want for breakfast, Joe — I think I _______ some bread and milk
He is a cutler(刀具商)–_____, a man who sells knives and sharp tools