_____ about the secret of his success,Steven Spielberg said that he owes much of his success and happiness ________his wife and children.

．Ireally don’t know _______I kept the secret papers．

Is Jim in the office —No, he ________ the dinning hall.

Dad, why must I stop_____ computer games—For your health, my boy.

Do you mind if I sit here—- ___________.It’s for Mr Brown.