Q166
It must be finished . . . . . . . . Friday afternoon.
A.
by
AnswerB.
of
C.
at
D.
on
Answer: Option A
Solution
Answer: Option A
Solution:
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.