Soru: Which of the following sentences is in the passive voice?
A) The dog chased the ball.
B) The ball was chased by the dog.
C) The children are playing in the park.
D) She writes a letter every day.
Çözüm: The passive voice is formed with a form of the verb 'to be' + past participle. Option B, "The ball was chased by the dog," fits this structure. 'Was chased' is the passive form of the verb. Therefore, the correct answer is B.