Question

i could not come to school yesterday i had a back pain which conjunction

Answer 1

Answer:

I could not come to school yesterday as/ because i had back pain.

Explanation:

As/ because is used to state a reason and  join 2 sentences.

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Answer 2

Answer:

I could not come to school yesterday as(or)because I had back pain.

Explanation:

As(also for)/ because is used to state a reason

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