问题
选择题
Many students in this school make __________ a rule to come to the evening classes even on Saturdays and Sundays.
A．this
B．that
C．it
D．them
答案
答案：C
考查代词it 作形式宾语，真正的宾语是后面的不定式，短语：make it a rule 使成为规定，句意：在这个学校许多学生上晚自习已成为一种规定甚至在周六和周日。所以选C。