We have a PE lesson _____ Wednesday afternoon.
问题描述:
We have a PE lesson _____ Wednesday afternoon.
答
这里填on,在星期几用on,比如on Monday:
在早上,中午,晚上用in,比如:in the morning,in the afternoon.
在星期几早上、中午、晚上用on.比如题目中的on Wednesday afternoon.