Dead Parts In A Track

I was trying to record a track(It’s my first time using audacity) and after recording I realized that there were some “dead parts”(skipped parts while recording) in it. I’m uploading a screen shot and a 7 sec sample for the sake of clarity. You can see it on screenshot as a “zero point” and You can hear it at second 4. How can I solve it?
Thanks for your help.

Try the suggestions on [u]this page[/u].