______ the students in our class is 50 a
题型:选择题
问题:
______ the students in our class is 50 and _______ them study very hard.
A.The number of; the number of
B.A number of ; the number of
C.The number of; a number of
D.A number of; a umber of
______ the students in our class is 50 and _______ them study very hard.
A.The number of; the number of
B.A number of ; the number of
C.The number of; a number of
D.A number of; a umber of