A．Tom feels great about the mark on his paper.
B．Tom is depressed at a bad score on his paper.
C．Tom’s test mark wasn’t as bad as he thought.
D．Tom wrote a test that was different from what he expected.

A．Anyone without breakfast does improve his performance.
B．Not giving people breakfast improve performance.
C．Having breakfast does not improve performance, either.
D．People having breakfast do improve their performances, too.