CAN \ COULD \ BE ABLE TO

Can you read this for me? I ...  see without my glasses.

I've never ...  speak Spanish as well as my brother.

After 2 years in China, I ...  speak quite fluently now.

I hate ...  understand my French neighbours.

When he was 40, he ...  speak six languages.

After 6 hours climbing, we ...  reach the top of the mountain.

When I was a child I used to ...  stand on my head.

Yesterday I lost my keys and I looked for them everywhere, but I ...  find them.

Sally wasn't at home, but I ...  contact her at her office.

If you tell him your problem he might ...  help you.