THERE WEREN'T ENOUGH STUDENTS, SO THEY...TO CLOSE THE SCHOOL.A. HA...

18. - GIÁN ÁN DE DAP AN HSG LOP 9 TX PHU THO V2
GIÁN ÁN DE DAP AN HSG LOP 9 TX PHU THO V2

18. There weren't enough students, so they...to close the school.

A. have

B. must

C. had

D. got