李さんは ___ ___ _★_ ___ です。

Translation: Mr. Li is a person who is very good at singing. - Sentence Construction Strategy: 1. The sentence ends with 'です'. We have '人' (person), so it will likely be '人 です' (is a person). 2. '上手な' (skillful/good at) is a Na-adjective modifying '人' -> '上手な 人' (skillful person). 3. The topic of skill is marked by 'が': '歌が' (singing + subject marker) -> '歌が 上手な人'. 4. 'とても' (very) modifies '上手な' -> '歌が とても 上手な 人'. 5. Full order: 李さんは [歌が(0)] [とても(2)] [★ 上手な(3)] [人(1)] です。 - Star position contains: 上手な (Choice 4).