A：太阳系
B：银河系
C：河外星系
D：总星系
—那间教室是他们的吗?
—不，这是我们的。
—Is that classroom ____?
—No,it's ____.
补充句子
写出反义词
生—____ 遥—____ 落 —____
My schedule is quite f____ , so I could arrange to meet you any day next week. When you're free ,just call me.
