Answer :
The incomplete sentences given appear to be exercises focused on verb forms in sentences, specifically with the verb 'to be.' The verbs 'are' and 'is' are forms of the verb 'to be' that are commonly used in English sentences to complement the main verb or provide more information about the subject.
How are they running?
- In this sentence, 'are' is used with the subject 'they.' It helps form a question about the manner in which 'they' are running. 'Are' is the correct form here because 'they' is a plural subject.
How is she preparing for her test?
- Here, 'is' is used with the subject 'she.' This sentence wants to convey a question about the method or process she uses to get ready for her test. 'Is' is the correct choice because 'she' is a singular subject.
How are you?
- Although the question is incomplete, it can potentially be completed with 'How are you doing?' or simply query someone's state or condition. 'Are' is the correct verb because 'you' is considered plural in a grammatical sense, even when referring to one person.
