By + gerund Activating devices

The passenger activates the ticket machine by _____________ the screen.

You switch the phone on by _______________ the button on the side of the handset.

The user starts the outboard motor by _____________ the handle of the cord.

The rider starts the engine by __________ on the battery and kicking the lever down.

The burglar activates the alarm by ____________ the laser beam.

A person coming near the house turns on the light by ___________ the motion sensor.

The driver starts the car engine by _______________ the key in the lock.

You start the charging process by ______________ in the adapter and switching it on.

A thief will activate the alarm by _______________ unsold goods between the transmitter and receiver.

The motorbike rider starts the engine by switching on the battery and _________ the lever downwards.