Question

I _ (was reading/have read) a book when you called.
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Answer 1

Answer:

I was reading a book when you called

Answer 2

Answer:

I was reading a book when you called.

Explanation:

In this sentence, we use the past continuous tense. This tense is used to describe actions that happened at a specific time in the past or continued for a specific period in the past.

For example-

I was playing in the garden when you called.

Was playing tells that the action was being done at the time of calling.

I was reading a book when you called.