Question

Select the most appropriate option to fill in the blank.

The project must be completed _____ the end of the week.

• A. on
• B. in
• C. at
• D. by

Answer 1

Answer:

D. by

• When referring to a deadline, we use by to indicate "no later than." "By the end of the week" means the task should be finished at any point up to that time.