A.Heats
B.Heating
C.To heat
D.Heated
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A.not to go against
B.don’t go against
C.not go to against
D.to not go against
A.To work
B.Working
C.Having worked
D.worked
A.to discharge
B.to be discharged
C.discharging
D.being discharged
A.to send
B.to be sent
C.for being sent
D.being to send
A.sub-boards
B.main switchboards
C.emergency switchboards
D.distribution boards
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