1. Lucy usually cleans the cage every two days.  (对画线部分提问)
    _____ _____ _____ Lucy usually clean the cage?
2. Jack's grandfather doesn't know how he should use a computer. (改为简单句)
    Jack's grandfather doesn't know how _____ _____ a computer.

1. At old times, children could neither read nor write. (改为同义句)
    At old times, children could not ___________ read __________ write.
2. We have another two exams before school finishes. (改为同义句)
    We have __________ exams before school finishes.
3. Both films are wonderful. (改为否定句)
    __________ film is wonderful.
4. The radio reports that 300 million people in China have eyesight trouble. (改为同义句)
    __________ __________ __________ 300 million people in China have eyesight trouble.
5. Jack's grandfather doesn't know how he should use a computer. (改为简单句)
    Jack's grandfather doesn't know how __________ __________ a computer.