问题
Mike is studying in _______ university and he wants to be _______ engineer .
A:a, a
B:a, an
C:an, a
D:an, an;
B:a, an
C:an, a
D:an, an;
正确答案是：
同类题型
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It was lucky that little Jack was not at home when the fire broke out；otherwise，hehis life．
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