句型转换。

1. He forgot to bring his football boots to school. (改为否定句)

    He ____________ ____________ ____________ bring his football boots to school.

2. You asked me to your party. Thanks. (改成一句)

    Thank you ____________ ____________ me to your party.

3. It's a lovely baby. (改为感叹句)

    ____________ ____________ lovely baby!

    ____________ lovely the baby is!

光缆是实现光信号传输的通信线路，它由一定数量的光纤按照一定方式组成缆心，外面包有护层，有的还包覆（）。