<span>When using the perfect tenses of verbs, it's necessary to add a helping verb, The answer is letter C. Helping verbs helps in conjunction to connect it with a mood or time of the verb. The examples of helping verb are </span><span>will, shall, may, might, can, could, and must.</span>
Answer:
Not 100% sure but maybe C
Explanation:
1. Successful (?)
2. Fear
3. Superstitious
4. Unlucky
5. Superstition