The woman shouted (a)   for help as her son was trapped in a broken-down lift.

He leaned out of the window and took a (a)   of sea air.

She was (a)   behind the sofa to avoid being seen by the kidnapper.

The fog was getting very (a)   . We couldn't really see the condition of the road.

The PE teacher’s (a)   voice rang out across the school field.

We can still smell the (a)   smoke from the burning tyres.

Can I open a window? It's (a)   in here!