( ) 1. Sam comes from Canada.
( ) 2. Sam spent the Mid-Autumn Festival at school.
( ) 3. The Chinese for “Thanksgiving Day” is “感恩节”.
( ) 4. Thanksgiving Day is on the 24th of November.
( ) 5. American people usually eat some turkey and pumpkin pies on Thanksgiving Day.

【解析】：本题是一个阅读理解判断题，需要根据短文内容判断给出的句子是否正确。这要求考生具备良好的阅读理解能力，能够从短文中准确获取关键信息，并将其与题目中的句子进行对比。
接下来，我们逐一分析每个句子：
1. 第一个句子“Sam comes from Canada.”与短文中“Sam is an American boy.”这一信息相矛盾，因此判断为错误。
2. 第二个句子“Sam spent the Mid-Autumn Festival at school.”与短文中“His father took him and his mother to a Chinese friend's house at the Mid-Autumn Festival.”这一信息不符，因此判断为错误。
3. 第三个句子“The Chinese for “Thanksgiving Day” is “感恩节”.”是正确的，因为“Thanksgiving Day”的中文翻译就是“感恩节”。
4. 第四个句子“Thanksgiving Day is on the 24th of November.”与短文中“It's on the fourth Thursday of November.”这一信息不符，因为感恩节是在11月的第四个星期四，而不一定是24号，因此判断为错误。
5. 第五个句子“American people usually eat some turkey and pumpkin pies on Thanksgiving Day.”与短文中“A big turkey and some pumpkin pies are their special food for the festival.”这一信息相符，因此判断为正确。
【答案】：
1. F
2. F
3. T
4. F
5. T