Everyone knows that the earth is round. MCQ with Answer and Explanation

Everyone knows that the earth is round.
A. That the earth is round is known.
B. The earth is known to be round.
C. It was known that the earth is round.
D. It is known that the earth is round.
Answer: Option D
Solution (By JKSSB Mock Tests)
Everyone knows → It is known.

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Practice More Active and Passive Voice Questions

Question #1
Someone has left the door unlocked.
A. The door had been left unlocked.
B. The door was left unlocked.
C. The door has been left unlocked.
D. The door is left unlocked.

Correct Answer: Option C


Explanation:
Unknown agent omitted; present perfect → has been + V3.

This question belongs to: English Active and Passive Voice
Question #2
Choose the correct active voice of: 'Could the problem be solved by him?'
A. Could he solve the problem?
B. He could solve the problem?
C. Did he solve the problem?
D. Can he solve the problem?

Correct Answer: Option A


Explanation:
Modal passive interrogative 'Could...be solved' → active 'Could he solve the problem?'

This question belongs to: English Active and Passive Voice
Question #3
Select the correct passive voice of: 'She has to learn English.'
A. English is to be learned by her.
B. English have to be learned by her.
C. English has to be learned by her.
D. English had to be learned by her.

Correct Answer: Option C


Explanation:
Semi-modal 'has to': Object + has/have + to + be + past participle + by + subject.

This question belongs to: English Active and Passive Voice