I regretted what I have done.—_______ gone is gone. ______ no use regretting it any more.[ ]

The author of the article believes that it is the test system，________teachers，that is responsible for the heavy burden of the middle school students nowadays

________him that she would fail as she was so able and worked so hard

Success in life doesn’t happen ______. It’s the result of devoting your time and energy to what you’ve set out to do.

________ he willing _________ people in need any time