Multiple choice

Directions: Choose an appropriate preposition to fill in the blanks.

One should know when _________ pay attention to work and when _________ family.

  1. to

  2. on

  3. with

  4. by
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A Correct answer
Explanation

The infinitive 'to' works in both positions: 'when to pay attention to work and when [to pay attention to] family'. The second 'to pay attention to' is elliptically understood but grammatically implied.

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