They ___ each other for a decade. MCQ with Answer and Explanation

They ___ each other for a decade.
A. knew
B. know
C. are knowing
D. have known
Answer: Option D
Solution (By JKSSB Mock Tests)
Duration to present → Present Perfect.

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Practice More Tenses Questions

Question #1
She ___ for you at the airport when you land.
A. will be waiting
B. waits
C. waited
D. is waiting

Correct Answer: Option A


Explanation:
Future Continuous for ongoing action at future time.

This question belongs to: English Tenses
Question #2
She ___ her bag and left the room.
A. had taken
B. takes
C. took
D. was taking

Correct Answer: Option C


Explanation:
Simple Past for sequence of completed actions.

This question belongs to: English Tenses
Question #3
I ___ this song since morning.
A. was singing
B. am singing
C. have been singing
D. sing

Correct Answer: Option C


Explanation:
Present Perfect Continuous with 'since' + time.

This question belongs to: English Tenses