A number of students ______ playing on the ground but I don't know what the exact number______.
#43873
A
are; is
B
are; are
C
is; is
D
is; are
推荐题目
A boy with two dogs_____ when the earthquake rocked the city.
#44203
A
were sleeping
B
is asleep
C
was sleeping
D
are asleep
The Japanese          suffering from the worst natural disasters         .   
#85958
A
are; ever since
B
are; of all time
C
is; ever since
D
is; of all time