Question

I (wait) for him since half past eight and I shall wait only another five minutes
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Answer 1

Answer:

I have been waiting for him since half past eight and I shall wait only another five minutes.

hope this is correct..

Answer 2

Ans.

I have been waiting for him of my half past eight and i shall only be waiting for another five minutes

Explanation:

Bro you ask to re-arrange it then it is correct...