Fall on stony ground

Have your ear to the ground

Beat it into the ground

Cover a lot of ground

And these are they likewise which are sown on stony ground; who, when they have heard the word, immediately receive it with gladness; / And have no root in themselves, and so endure but for a time: afterward, when affliction or persecution ariseth for the word's sake, immediately they are offended.

Can't tell his ass from a hole in the ground