💡 Detailed Explanation
Translation: Mr. Lee can speak English well.
- Grammatical point: Ability pattern '〜（辞書形）ことができます' (can do ~).
- Explanation: The potential ability is expressed as 'Verb (dictionary form) + ことが＋できます'. The dictionary form of 'to speak' is 話す (はなす - hanasu).
- Other choices are not dictionary forms.