Final answer:
The sentence 'I found that my son _________ (is) awake' should be completed as 'I found that my son was awake' to maintain correct and consistent tense usage in English.
Step-by-step explanation:
In English, the form of the verb should correspond to the tense indicated by the context of the sentence. In the provided sentence 'I found that my son _________ (is) awake', the context suggests a past event. Therefore, we should be using the past tense version of the verb 'is', which is 'was'. So, the completed sentence should be 'I found that my son was awake'. This change is crucial to maintaining verb tense consistency, which is used to indicate when an action or state of being occurred.
For example, regular verbs form their past tenses and past participles by adding -d or -ed, like 'bake' becomes 'baked'. Verbs change according to the tense necessary for the situation.
Learn more about Verb Tenses