—Youve dropped “s” in the word “acros”．—Oh, letter “s” should be doubled like this “ac

．—You've dropped “s” in the word “acros”．
—Oh, letter “s” should be doubled like this “across”．
A. a; a
B. an; a
C. an; the
D. the; the

A. a; aB. an; a(答案→)C. an; theD. the; the解析：C　句意：“这个单词(acros)你漏写了一个(s)。”“噢，那个字母(s)应该双写，写成(across)。”第一空用不定冠词表示one之意，且字母“s”(/es/)以元音音素开始，故与an连用；第二空后的letter “s”特指上句中的“s”，故与定冠词连用。

谢谢了