My sister ________ a good habit. She oft...

My sister ________ a good habit. She often washes her hands before eating.

A.have B.had C.has D.has had

C 【解析】句意：我的姐姐有一个好习惯，她经常饭前洗手。考查动词的时态。have动词原形；had动词的过去式；has动词的第三人称单数形式；has had动词的现在完成时。根据“often washes”可知描述的经常性和习惯性的状态用一般现在时态；主语she是第三人称单数，动词用has。故选C。

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