Multiple choice

Directions: Choose the correct alternative to fill in the blank.

I ________ walk constantly for hours.

  1. used to be able to

  2. could use to

  3. could be able to

  4. am use to
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

‘Used to be able to’ means had the ability to do something in the past, although you don’t have this ability now.

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