Let’s go to the park ______ Sunday morning.A in B on C / D her

问题描述:

Let’s go to the park ______ Sunday morning.
A in B on C / D her

B
具体某天用ON

选B 具体某天的早晨下午晚上介词用on

B
解析:在具体某一天的上午、中午或下午用介系词ON.

b