Selected MCQ

Current Question
A senior officer is ___ duty tonight.
  • A. at
  • B. in
  • C. on
  • D. under
Correct Answer: C
Explanation:
The phrase is on duty for someone currently assigned to work.
Related Question 1
The receptionist is not ___ duty after 6 p.m.
  • A. at
  • B. in
  • C. on
  • D. under
Correct Answer: C
Explanation:
The phrase "on duty" means someone is actively working.
Related Question 2
Only one nurse was ___ duty in the emergency ward.
  • A. at
  • B. in
  • C. on
  • D. under
Correct Answer: C
Explanation:
The phrase is on duty for someone currently working.
Related Question 3
We are relying ___ you to lock up tonight.
  • A. in
  • B. on
  • C. with
  • D. to
Correct Answer: B
Explanation:
The standard pattern is rely on.
Related Question 4
I'll call you ___ the morning, not tonight.
  • A. on
  • B. at
  • C. in
  • D. during
Correct Answer: C
Explanation:
We use "in" with broad time periods, such as the morning.