她经常参加英语演讲比赛.she takes part in English speech contest_______ ________.
问题描述：
她经常参加英语演讲比赛.
she takes part in English speech contest_______ ________.
答
at intervals 或者at times还或是very often
答
usaually
答
very often
两个空嘛..
而且我个人认为:
very often一般都是放在句末的