Short Answer 
The key to filling the gap in the sentence about Olympic training is to understand the seriousness and dedication of the athlete’s preparations. After analyzing the adverb options, “systematically” is the best choice as it reflects methodical and thorough training, completing the sentence effectively.
Step 1: Understand the Context
To effectively fill in the gap in the sentence about Olympic training, it’s important to grasp the overall message being conveyed. The sentence indicates that the athlete has engaged in thorough preparations, suggesting a high level of seriousness and dedication. The adverb chosen must complement this idea of thoroughness and commitment throughout their training time.
Step 2: Analyze the Options
Next, consider the definitions of each adverb provided in the options, as this will help in selecting the most suitable word to fill the gap. Here’s a quick breakdown of their meanings:
- Intrinsically ‚ÄöAi essentially; naturally.
- Ostensibly ‚ÄöAi apparently; seemingly.
- Systematically ‚ÄöAi methodically; completely; detailedly.
- Predominantly ‚ÄöAi mostly; mainly; chiefly.
Evaluating these definitions helps narrow down which term aligns best with the concept of rigorous training for the Olympics.
Step 3: Choose the Best Fit
After analyzing both the context and definitions, the word that stands out as the most fitting is systematically. This term encapsulates the idea of methodical and disciplined training, which is essential for an athlete preparing for a significant event like the Olympic Games. Thus, the completed sentence reads: “His preparations for the Olympic Games had been very thorough. He had been training systematically for months.”