The boy is Bill _ monitor of class one

题目

The boy is Bill _ monitor of class one
A a B an C the D /
____of the Grade ____ students have taken part in this activity
A Two-fifth ; Four B Two-fifths ; four C Second-five ; Fourth
D Tow-fifths ; Fourth

答案

前面已有"the"所以就不可以重复"the".
"the"的意思在句中是一致的.
加上了它就会显得重复,累赘.
并且,"monitor"前不缺主语,它是连接着"bill"而言的.