Answer:
He orders the bins in the store-shed to be filled with sand, hidden beneath a layer of grain and meal, and then shows them to Mr. Whymper.
Explanation: He wanted to fool him into thinking that the farm has plenty of food.
For the first the problem is the word “coffees”, correctly it would be just “coffee”.
The second is “glass” when it should be “glasses”
The third is “any pencils” when it should be “many pencils”
The forth is “aren’t” when it should be “isn’t”
And finally the fifth is “some” when it should be “any”.