A sentence has been given in Active/Passive Voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active Voice.
The CEO kept the staff members waiting in the boardroom.
1
The staff members are kept waiting in the boardroom for the CEO.
2
The staff members were kept waiting in the boardroom by the CEO.
3
The staff members were being kept waiting in the boardroom for the CEO.
4
The staff members were waiting in the boardroom for the CEO.