张老师原计划10天改250份试卷，现要提前5天完成，每天平均要比原计划多阅几份卷子
A．50
B．20
C．25
D．10
参考答案：C
Put yourself in situations _____ you will be forced to communicate in English, and you will see more progress over time .
A．when
B．that
C．where
D．how
零基预算法
