Multiple choice

Directions: Fill in the blank with the appropriate form of the verb.

A widespread outbreak of influenza _______ in the year 1919.

  1. occur

  2. had occurred

  3. occurred

  4. was occurring

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

 Whenever there is a reference to a definite time in the past (in the year 1919), we use simple past tense.