【题目】My aunt ______ letters to her son many years ago. But now she ______ emails to her son. ( )
A.writes; writesB.write; is writing
C.wrote; writesD.wrote; is writing
【答案】C
【解析】
句意：我阿姨多年前给她儿子写信。但现在她给儿子写电子邮件。根据many years ago，可知句子是一般过去时，谓语动词用过去式，排除AB；根据now可知句子是一般现在时，主语是第三人单数，谓语动词用三单，排除D。故选C。
