🔗 前置詞 ・ アオイ
TOEIC Part5文法問題 アオイ: Q1（前置詞）
The manager asked all employees to submit their reports ___ Friday afternoon.
The manager asked all employees to submit their reports ___ Friday afternoon.
答えを見る
正解: B) by
The blank marks a deadline: submitting reports by Friday afternoon. 'By' is the deadline preposition, meaning an action is complete no later than a given point. 'In' means 'within/after' a span and doesn't attach to a single named day. 'On' attaches to dates and days (on Friday), but 'on Friday afternoon' would only mark a point in time, not a deadline. 'At' is for clock times (at 3 p.m.).