－Oh so many people in the park?－Nobody likes to stay at home Sunday morning. A. in B. on

问题补充：

－Oh, so many people in the park?

－Nobody likes to stay at home Sunday morning.

A. in B. on C. at

答案：

解析：介词考查。in表示在某年、某月、某星期；on表示在某天或某天的早上、中午、晚上；at表示在某时某刻。根据句意：在周日早晨用介词on。