请按要求完成下列句子。  

1. Today is Sunday. (就画线部分提问)

    _____ _____ is today?

2. We play game on Tuesday. (变成否定句)

    We ______ play games on Tuesday.

3. They are doing their homework. (变成一般疑问句)

    _____ _____ doing their homework?

4. There is a cup of water on the table. (变成复数形式)

    There ______ _____ of _____ on the table.

5. What's the time? (写出同义词)

    _____ _____ is it?