Q. 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.
✅ Correct Answer: (C)
by
Explanation: 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.
Explanation by: Team MCQ Buddy
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.