1. 1) I've just bought 2) have you ever seen? 3) My brother has been never.. 4) haven't heard 5) have you written..? 6) hasn't had 7) what have they done? 8) where have I lost my keys? 9) hasn't met 10) have you ever eaten ...?
2. 1) a 3) c 4) c 5) a 6) b 7) c 8) c 9) c 10) a