问题
English is ________ useful language so that most people speak it as ________ second language.
A:a; the
B:an; the
C:an; a
D:a; a
B:an; the
C:an; a
D:a; a
正确答案是：
同类题型
Please pour some milk _____ the blender.—Oh, sorry. I’m busy now.[ ]
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He always looks _______. You can see his smile all the time.
Jim wants to take part in the torch relay (火炬接力) of the 2012 Olympic Games.—________.[ ]
______ a light when necessary. You will bring light to other people and yourself.