Multiple choice

She's been beavering ....... at her homework for hours.

  1. in

  2. out

  3. with

  4. up

  5. away

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The phrasal verb "beaver away" means to work diligently and persistently at something. Option E (away) correctly completes this phrase. Other options don't form the standard expression for working industriously.