In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Ambition is a vital ingredient for success. Without ambition to push us, we will not be (1 ) __________ of great achievements. We all need that special something (2) __________ ourselves to give us the willpower to reach a higher goal (3) __________ we imagine ourselves capable (4) __________ . Yet, ambition, (5) __________ money and fire, is a good servant, but a bad master.