They ___ since 8 a.m. and now they are tired. MCQ with Answer and Explanation

They ___ since 8 a.m. and now they are tired.
A. work
B. are working
C. have been working
D. worked
Answer: Option C
Solution (By JKSSB Mock Tests)
Action started in past and has just stopped with present result → Present Perfect Continuous.

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Practice More Tenses Questions

Question #1
He ___ the novel in one sitting.
A. read
B. has read
C. had read
D. reads

Correct Answer: Option A


Explanation:
Completed past action → Simple Past.

This question belongs to: English Tenses
Question #2
He ___ a shower at the moment.
A. had
B. was having
C. has
D. is having

Correct Answer: Option D


Explanation:
At the moment → Present Continuous.

This question belongs to: English Tenses
Question #3
They ___ the museum last Sunday.
A. have visited
B. visit
C. were visiting
D. visited

Correct Answer: Option D


Explanation:
Simple Past with definite time 'last Sunday'.

This question belongs to: English Tenses