短文改错。

     Mother's Day is a popular holiday in many country____. It is on the second Sunday in May（五月）It are ____ a day to thank others. In ____ that day we give flowers, cards or other present____  to our mothers. On the card, we usual ____ write “Thank your____, mother”, “To the best father____ in the world”, “Best wish ____ for Mother's Day” and so on. On Mother's Day, we help us____  mothers do a lots ____ of house work. We try to make our mothers happy.

摩擦力对我们有时是____，有时是____。

    自三峡七百里中，两岸连山，略无阙处。重岩叠嶂，隐天蔽日，自非亭午夜分，不见曦月。

    至于夏水襄陵，沿诉阻绝。或王命急宣，有时朝发白帝，暮到江陵，其间千二百里，虽乘奔御风不以疾也。

    春冬之时，则素湍绿潭，回清倒影。绝巘多生怪柏，悬泉瀑布，飞漱其间，清荣峻茂，良多趣味。

    每至晴初霜旦，林寒涧肃，常有高猿长啸，属引凄异，空谷传响，哀转久绝。故渔者歌曰：“巴东三峡巫峡长，猿鸣三声泪沾裳。”