Fred is away at the moment. I don't know exactly when he's coming back but I'm sure he'll be back . . . . . . . . Monday.
A. at
B. in
C. by
D. until
Answer: Option C
Solution (By Examveda Team)
As a preposition of time, 'by' means before a specific time. 'By' shows a time limit for something to happen. An event must happen before a specific time is reached. For example - Please send me the report by Tuesday.This Question Belongs to Competitive English >> Preposition
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