下列支流位于长江干流以南的是（　　）

B. 根据短文内容和所给中文提示，在空白处写出单词的正确形式。每空限填一词。

    At school many things____（发生）to us. We may feel____（激动的）when we succeed in a school play. We may feel sorry if we lose an important match. We want to keep the memory in our lives. How to keep memories? Our teacher, Mr. Green, has taught ____（我们）how to remember things to make our own yearbook. A yearbook is a____（种类）of book which is used to memory wonderful____（时刻）. It's usually made at the end of year. Last ____（十二月）, we began to make our yearbook. First we chose the persons that had done something ____（特殊的）, then some students interviewed them, some ____（写）down their stories, others took ____（照片）of them. Finally, our teacher helped us to put things ____（一起）. Then we had our first yearbook.