一个数的万位上是最小的质数，百位上是最小的合数，个位上是最大的一位数，其余各位都是零，这个数写作______，读作______．

根据要求改写下列句子，每空只填一词。

1. Tom had lunch at school yesterday. (改为否定句)

    Tom ______ ______ lunch at school yesterday.

2. The boys are flying kites in the park now. (就画线部分提问) 

    ______ are the boys ______ in the park now?

3. She does well in singing and dancing. (改为同义句)

    She is ______ ______ singing and dancing.

4. Lucy hasn't traveled by sea. Lily hasn't, either. (合并为一句简单句) 

    ______ Lucy ______ Lily has traveled by sea.

5. You mustn't play jokes in the reading room. (改为祈使句)

    ______ ______ jokes in the reading room.