BOSS / INSIST / EVERYONE / ON / BE / OFFICE / NINE O’CLOCK

41. boss / insist / everyone / on / be / office / nine o’clock.

A. The boss insisted on everyone being on the office at nine o’clock.

B. The boss insisted on everyone being in office at nine o’clock.

C. The boss insisted on everyone being of the office at nine o’clock.

D. The boss insisted on everyone being in the office at nine o’clock.