Other guests at yesterday's opening ceremony, which was broadcast () by the radio station, included the Governor and the Mayor.

单项选择题Consumption of domestic fuel oil () from 150 gallons a month at the height of winter to practically nothing in July and August.

A. differs
B. shifts
C. varies
D. switches

单项选择题Sometimes they () their students' poor comprehension to a lack of intelligence.

A. distribute
B. attribute
C. contribute
D. consider