But for the school charity sale on that very day, I would come.

要不是那天学校有义卖活动，我一定会来的。

I am writing to inform you that our class is holding a charity sale for kids in need of help.

我写信通知你, 我们班正在为需要帮助的孩子举行慈善义卖。

I wanted to let you all know that our class will be organizing a charity sale to benefit children in need.

我想讓你們都知道, 我們的班級將組織一場慈善義賣活動, 以幫助有需要的兒童。

Our class is to hold a charity sale to raise money for those children who are in need of help on January 5, 2014.

我们班将于2014年1月5日举办一场慈善义卖, 为需要帮助的儿童募集资金。

Our class is to hold a charity sale to raise money for those children who are in need of help on January 5,2014. As the monitor of our class, Fm calling on all students to take part in the sale.

我们班将于2014年1月5日举办一场慈善义卖，为需要帮助的儿童募集资金。作为班长，我 在这里号召大家积极参加。