Problem: How does the sentence end?

Jane tried a chisel to cut the slate but it never worked so he used a cutter. The 
Answer: chisel is blunt.

Problem: How does the sentence end?

Joel wants to learn how to calculate asset impairment so he asks Derrick for help, because 
Answer: Derrick knows how to do it well.

Problem: How does the sentence end?

James tried to get the drug into the jar before the man arrived, but there is still some left on the table. The 
Answer: jar is too small.

Problem: How does the sentence end?

Rachel was sad that Betty wouldn't eat the lemon drop cookies because 
Answer:
Rachel baked them with too much sugar.