____ the morning of my mother’s birthday, I usually help my mother do some housework.A．InB．AtC．Durin

题目简介

____ the morning of my mother’s birthday, I usually help my mother do some housework.

A．In

B．At

C．During

D．On

题型：单选题难度：偏易来源：不详

考查介词，在具体某一天的早上，下午，晚上都是介词on，句意是;在妈妈生日的早上，我通常帮妈妈做家务。选D。