Question

Which sentence has an inappropriate shift in verb tense?

Jasmine will ride her bike after she walks her dog.

Diego had read for twenty minutes before he played video games.

Caleb felt calm because he knows the solution to his problem.

By the time Grandma arrives, Chloe will have cleaned her room.

Answer 1

Answer: Caleb felt calm because he knew the solution to his problem.

Explanation:

The sentence represents an action that has happened in the past. So the action verb need to be in past form rather than in present.

Answer 2

Answer: # 3

Explanation: check if the shift makes sense.