单选题
Herbert has been fat lot a long time, so he has (41) to go on a diet that he might (42) weight. Herbert has (43) himself all the foods he (44) , but he has not lost any weight. When someone (45) Herbert yesterday, he hid a big box (46) his desk. The (47) held five big chocolate (48) and three bags of candy. Herbert decided to (49) himself because his diet was a (50) one.