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
The Internet plays _______ an important part in our society _______ it has influenced our life.
I suppose you are at least 60 years old.- Thank you. I’m glad you______ that. My real age is 362.
The mountain was_____ steep (陡峭的) _____ few people in our city reached the top.[ ]