Question

Ritika returned to school a week ago ( begin — it has been )

Answer 1

Answer:

It has been a week since Ritika had returned to school

Answer 2

Answer:

As per the given, the sentence becomes “It has been a week since, Ritika returned to school”.  

Explanation:

• The word has and have are used as per the sentences.
• Have is used for three cases: First person (I), Second person (you) and third person in plural form (they).
• Has is used for third person in singular form (he, she and it).
• Have and has can be used to create past participle form of verb with past or present perfect tense.
• Here the ‘It’ refers the Ritika’s returning of school. So, we using it. And the Has been is the is present perfect tense.