Question

I _____ at home ( Am, is, are, was, were )
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Answer 1

Answer:

i was at home. (was)

pelase like if its correct.

Answer 2

Answer: I am at home.

'I was at home.' is also correct since this is not a fixed question. And there is no mention whether it was 'yesterday' or 'now' .

As for is, are, were, They aren't in use if the sentence has 'I' as a subject.