Oh, crikey... so it was a question of big fat guilt if the sieve moved? Zhenya gulped. She hated these sorts of things, she was always worried she would be falsely accused of doing whatever it was they were accusing people of. And now this! Well, she had already checked her bag, and under the desk and chair. It obviously wasn't her. But anyway, they had to do this. She went up and collected a sieve and looked around. Was anyone else not partnered up?