—What _______ the number of the students in your school?
—About two thousand. A number of them _______ from the countryside.
A. is; ,are B. is; is C. are; is D. are; are
—What _______ the number of the students in your school?
—About two thousand. A number of them _______ from the countryside.
A. is; ,are B. is; is C. are; is D. are; are
A