Multiple choice

Directions: Fill in the blank with the most appropriate word/phrase from the given options.

The initial objects with which scientists _________ are the objects of perpetual experience.

  1. concerned

  2. were concerned

  3. are concerned

  4. had to be concerned

  5. concern

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

'With which' they 'are' concerned. The sentence is in the present tense.