The battery ______ in the circuit.
is placing
is placed
places
placed
The faulty resistor ______ by the engineer
is replaced
is replacing
replaces
replaced
The resistor ______ to control the current.
added
is added
adds
is adding
The capacitor ______ when damaged.
is replaced
replaced
is replacing
replaces
The engineer ______ the resistor to improve performance last week
added
adding
adds
is added
The wires ______ to complete the circuit.
are connecting
connect
connected
are connected
The switch ______ to stop the current
turns of
is turning off
is turned off
turned off
The man ______ the battery for testing.
connected
connects
connecting
is connected
The battery ______ to the resistor
is connecting
connected
connects
is connected
The wires ______ regularly by the technician.
checked
are checked .
check
are checking .
The switch ______ by the little girl.
turning on
turned on
turns on
is turned on
The resistor ______ to the circuit by the engineer
connects
connected
is connecting
is connected
The capacitor ______ by the power supply
is charging
charges
charged
is charged
The circuit ______ by the students.
is studying
studies
studied
is studied
The circuit ______ carefully by the technician.
is fixing
fixed
fixes
is fixed