修改病句：Aunt Li often takes a walk in Sunday morning.

Aunt Li often takes a walk on Sunday morning.in表示较长时间,如世纪、朝代、时代、年、季节、月及一般（非特指）的早、中、晚等.如：in the 20th century,in the 1950s,in 1989,in summer,in January,in the morn...