1．(2020·全国卷Ⅰ)Data about the moon's composition，such as how much ice and other treasures it contains，could help China decide whether ________ (it)plans for a future lunar (月球的)base are practical.
解析： 考查代词。此处表示“它的计划”，故用形容词性物主代词its。
答案： its
2．(2020·新高考山东卷)As well as looking at exhibits，visitors can play with computer simulations(模拟)and imagine ________(they)living at a different time in history or walking through a rainforest.
解析： 考查反身代词。根据语境可知，主语visitors发出的动作imagine作用于自身，此处应用反身代词形式，故答案为themselves。
答案： themselves
3．(2020·北京卷)She recognized ________(I)potential and showed me that I could write with creativity and enthusiasm.
解析： 考查代词。分析句子结构可知，此处的potential是名词，意为“潜力”，故此处应用形容词性物主代词修饰名词，故填my。
答案： my
