句型转换。

1. Mr.  Wu went to America by plane. (就画线部分提问)

    _________ _________ Mr.  Wu go to America?

2. It took us 3 hours to go bike riding. (同义句转换)

    We _________ 3 hours _________ bike riding.

3. He sometimes goes to the library. (就画线部分提问)

    _________ _________ does he go to the library?

4. You mustn't talk in the reading room. (改为祈使句)

    _________ _________ in the reading room.

5. I think.  You won't like the film. (合并成一个句子)

    I _________ think you _________ like the film.

甲国公民在乙国将丙国公民杀死后逃人丁国，现甲、乙、丙三国均向丁国要求将其引渡。下列表述中正确的是下列哪一项

A．丁国应将其引渡给甲国

B．丁国应将其引渡给乙国

C．丁国应将其引渡给丙国

D．由丁国自己决定将其引渡给哪个国家