_________ ANY EMPLOYEE BE ILL, THEY MUST CALL THE OFFICE TO INFORM...

10. - DE O THI DAI HOC VA DAP AN THAM KHAO
DE O THI DAI HOC VA DAP AN THAM KHAO

10. _________ any employee be ill, they must call the office to inform their head of departure.

A. Were B. Should C. Had D. If