Two fifths of the highway________so far.

A．has been completed                             B．was completed

C．have been completed                           D．has completed

In our class _____ of the students _____ girls.
A. two fifths; are      B. second fifth; are   C. two fifths; is

 ________of the students in my school _________ girls.

A. Two fifths; are       B. Two fifths; is  C. Two fifth; are

In our class _____ of the students _____ girls.

A. two fifths; are      B. second fifth; are   C. two fifths; is