choose correct

I'm not surprised it doesn't work. You haven't unplugged it / plugged it in!

• unplugged it

• / plugged it in!

Oh no! The computer's crashed and I haven't deleted / saved my file.

• delete

• save

You often have to record / reboot your computer after updating the software.

• record

• reboot

Can you rewind / pause the camcorder? I'd like to see that bit again.

• rewind /

• pause

You should fast forward / charge the battery for eight hours before using the mobile phone for the first time.

• forward

• charge

That old adding machine wasn't electronic so you didn't have to switch it on / turn it up.

• switch it on

• turn it up.