Раскрыть скобки и написать глагол в past simple или present perfect: 1. our exam results still (arrive). i wonder how i did? 2. mr dawson is the best teacher we (have) 3. i don't know what i (do) with my german books

1. Our exam results haven't still arrive. I wonder how I did? 2. Mr Dawson is the best teacher we have had. 3. I don't know what I have done with my German books.