用一般现在时描述过寒假做的事（英语短文）

前两天我弟弟刚刚问我来,这就有人问
During winter vacation,I participate in an extra educational programme to improve my oral English.In this programme,various skills about how to start a conversation effectively are imparted.Besides,as a junior high student in face of senior high entrance examination,I spend most of my time reviewing what I learned last semester in order to construct the basic infrastructure of knowledge system.In this matter,little time has been set aside on football field or dota.Simultaneously,I still submerge myself in the library every weekend to satisfy my voracious appetite for knowledge as I usually do.嘿嘿,想不出还干了什么了,就这些吧.我叫Doris,写的不好,请批评指正