In those days John with his classmates  _____  kept busy preparing for the exam.
#86061
A
is
B
are
C
was
D
were
推荐题目
The boy and girl each _____ their own toys.
#86050
A
has
B
have
C
are having
D
is having
It’s difficult ______ this work today.
#43615
A
to finish
B
finished
C
finishing
D
finishes
The number of students in our school   about 30 000 and  them study hard.
#86090
A
is;a large amount of
B
are;a number of
C
is;large amount of
D
is;a large number of