22.3

They closed the swimming pool because there weren't any ........ that day.

• lifeguards

• criminals

• wipers

Please make sure to turn off all your ...... when the plane takes off.

• alarms

• devices

• cases

Mike is sure that his ex girlfriend is ....... him.

• detecting

• publishing

• spying on

You can't .... yet. You're only 16 years old.

• vote

• publish

• detect

The teacher's job is to make sure that the ...... of the school's website is suitable for teenagers.

• alarm

• content

• increase

Jim is happy because there has been a(n).... in his company's profits. He's going to make more money this year!

• notice

• sign

• increase

I'm trying to .... this maths exercise on my own, but it's too difficult.

• work out

• put in

• put up

Tom studies hard because he wants to go to university and become a ..... .

• criminal

• lawyer

• lifeguard