Multiple choice

Directions: Choose the correct option to fill up the blank.

Oil prices have increased by 23 pc _______ the beginning of the year.

  1. since

  2. for

  3. when

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

When referring to a point in time in the past that continues to the present, 'since' is the correct preposition to use with the present perfect tense.

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