问题
_______ you are busy now, let’s go next time, OK
A:a, an
B:a, a
C:an, a
D:an, an;
B:a, a
C:an, a
D:an, an;
正确答案是：
同类题型
We just hope that Tom will bring ________ goodnews back home this time.
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You have just read the newspaper. Did you find _________ in it.
______ is well known to everyone, I should say, isthat a man becomes learned by asking questions.
We were________the most important scientific development of the century. [ ]