They're my favorite.
句中 favorite 为名词，表示 “特别喜欢的人或事物”，favorite 也可以用作形容词，表示 “最喜欢的”。
1.名词
• Lemon cakes are my favorite.
柠檬蛋糕是我的最爱。
• Black coffee is my favorite.
我最喜欢喝黑咖啡。
2.形容词
• Fireworks are my favorite part of the holiday.
烟花是节日中我最喜欢的部分。
• Look! My favorite musician is playing.
看！我最爱的音乐家正在演奏。
She sends her resume to them.
在短语 send something to someone 中，动词意为 “邮寄、传送”，后接双宾语，直接宾语为物，间接宾语为人。
• Sam is sending a Father's Day card to his father.
山姆要寄父亲节卡片给他的爸爸。
• Mandy sent a text message to me yesterday.
曼蒂昨天给我发短信。
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