1. The only way for growers to salvage frozen citrus is to process them quickly into juice concentrate before they rot when warmer weather returns.
（A）to process them quickly into juice concentrate before they rot when warmer weather returns
（B）if they are quickly processed into juice concentrate before warmer weather returns to rot them
（C）for them to be processed quickly into juice concent rate before the fruit rots when warmer weather returns
（D）if the fruit is quickly processed into juice concentrate before they rot when warmer weather returns
（E）to have it quickly processed into juice concentrate before warmer weather returns and rots the fruit.
2. Often visible as smog, ozone is formed in the atmosphere from hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
（A）ozone is formed in the atmosphere from
（B）ozone is formed in the atmosphere when
（C）ozone is formed in the atmosphere, and when
（D）ozone, formed in the atmosphere when
（E）ozone, formed in the atmosphere from
3. Legend has it that when the Mohawk Joseph Brnat was presented to George III in 1776,he proudly refused to kiss the king's hand,inasmuch as he regarded himself an ally, not a subject.
（A）as he regarded himself an ally,not
（B）that he regarded himself to be an ally rather than
（C）as he considered himself to be ally instead of
（D）that he considered himself to be ally instead of
（E）as he considered himself as an ally rather than
4.According to a panel of health officials, there has been a great deal of confusion in the medical profession about whether obesity is a biological disorder posing serious health risks or a condition more related to appearance than to health.
（A）about whether obesity is a biological disorder posing serious health risks or a condition more related to appearance than to
（B）with respect to obesity being a biological disorder posing serious health risks if it is related more to appearance than
（C）over whether or not obesity is a biological disorder posing serious health risks or it is a condition more related to appearance than to
（D）about obesity and if it is a biological disorder posing serious health risks or a condition related to appearance more than to