____÷____=____(组)
The red schoolbag is ____(她的)．
扩句
①眼睛看不见。
②明明像个天使。
He had hoped to have an opportunity to travel abroad for long. But it was a(n) ______ that he missed it when it came last month.
将函数y=sin（x﹣π3）的图象上所有点的横坐标伸长到原来的2倍（纵坐标不变），再将所得的图象向左平移π3个单位，得到的图象对应的解析式是（ ）
，若向量
满足
，
，
