下列生物集合中，属于生物群落的是（　　）

下列计算正确的是（　　）

   I came to Australia last year and I  ____   (落下) in love with it. I can see the ____  （明亮的）sunshine everywhere. At the beginning of this ____  (学期), I couldn't understand the teacher in class. Her English was quite different from what I'd heard in class at home. I;m____(幸运的) enough because my classmates are really friendly and helpful . It's____  (令人惊讶的) that I got an A last week. My science teacher is ____（也）good. She said that I was____ （勤勉的）. I dedided to work harder and get good ____（成绩）.After class I always play soccer with ____  (他们).  This is a great ____ （机会）for me to study in Australia .