Multiple choice

He's been working there _______ ten years.

  1. for

  2. since

  3. already

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

We use the preposition 'for' to state the duration of an action (a period of time like 'ten years'). 'Since' is incorrect because it is only used to mark the specific starting point of an action (e.g., 'since 2010').

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