In our school library there ____ a number of books on science and the number of them ____ growing larger and larger.
#43975
A
is; are
B
are; is
C
is; is
D
are; are
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To get well,     .
#86020
A
we are going to operate on the patient
B
an operation is necessary
C
the patient needs an operation
D
the doctor will perform an operation on the patient
This is Mr. Black and         my English teacher.
#44129
A
this is
B
she is
C
he is
D
it isn’t