You won't stop those problems by covering them up my friend. You need to think about water, its the root of your basement leak problems. Are your downspouts pouring onto the outside of your foundation? Do you have a slope away from your home to divert water from your home?
Dry it out, get a...
As a professional waterproofer, we deal with cracks all of the time. They are normal to start appearing about 4-5 years after the home was built... but it is not normal for them to come as fast as they are coming for you. I would advise you get them addressed (helical piers is best solution)...