句型转换。

1. Linda carries some new books to school library. (改为一般疑问句)

    _____ Linda _____ any new books to school library?

2. He will return the bike in ten minutes. (对画线部分提问)

    _____ _____ will he return the bike?

3. "Does your sister clean her room every day?" Mom asked me. (改写句子，句意不变)

       Mom asked me _____ _____ sister _____ her room every day.

4. Tom played volleyball after he helped his mom with chores. (改写句子，句意不变)

      Tom _____ _____ volleyball _____ he helped his mom with chores.

我州境内正在修建中的“张花高速公路”工地上，有一水泥板质量为0.8 t，现在工人叔叔们需要用起重机把它提升到5 m高的桥墩上．请问：

（1）这块水泥板重量是多少？（取g＝10 N/kg）

（2）在这一过程中，起重机做了多少功？