Question

1 choose the correct answer.

1. ____ they worried about the time they spend online?

○ is
○ do
○ are

Explanation:

The phrase "be worried about" is a fixed expression meaning "to feel anxious or concerned about". The subject "they" is plural, so we need a plural form of the be - verb. "Is" is singular, so it's incorrect. "Do" is used for questions with action verbs, but here we have the adjective "worried" after the be - verb structure, so "Do" is also incorrect. "Are" is the plural form of the be - verb, which matches the plural subject "they" and the "be worried about" structure.

Answer:

C. Are