(2022-A) - ABILITY - EX ONE (2A)

We walked all day, and at five o'clock we _____ reach the top of the mountain.

• could

• were able to

I was so worried that I _____ and I lay awake all night.

• couldn't sleep

• couldn't have slept

_____ hear the neighbours' television? It's far too loud!

• Can you

• Are you able to

I _____ my tablet PC more cheaply online, but in fact I bought it from my local computer shop.

• could buy

• could have bought

When I was a small child, I _____ sing beautifully, but my voice isn't so good now.

• could

• was able to

Although the shop was very crowded, we ______ get the shopping done quite quickly.

• could

• were able to