once a day.和once a day.every day.哪句话对

once a day.和once a day.every day.哪句话对 once a day once every other day once a day ago 英语 I feed my rabbit carrots once a day对划线部分提问once a day划线 We should clean the rabbit's hutch once a day.（对once a day提问 She drink milk once a day 对 once a day 提问 I walk them in the park once a day.对once a day提问 是once every morning 还是once a day every morning.为什么? once a day=one time a day? Jack watches TV a______ once a day Once a day,is it too often?