問題文全文(内容文)：
N.T. SERIES Third Edition Stage3 Lesson2-3のkey point 解説動画です。

＜内容＞
助動詞の後ろに　have＋過去分詞Vpp　を置く用法について詳しく解説しています。
推量と非難・後悔とパターン分けをして整理しています。

＜例文＞
①I can't find Cathy. She may have taken the wrong route.
②She might have chosen another route to avoid the traffic jam.
③David didn't show up on time. He must have overslept.
④He cannot have forgotten the meeting time.
⑤You should have checked the correct spelling of his name.
⑥It's five o'clock. Mike should have arrived at the station by now.
⑦You look pale. You shouldn't have stayed up late last night.

問題文全文(内容文)：
『ネクステージ』など、文法問題集のまとめも覚えるべき？！

問題文全文(内容文)：
【高校英語】助動詞の重要な表現を17分で覚える！

問題文全文(内容文)：
英文法が苦手な人のために、勉強法を解説します。

状況別に勉強法を参考にしましょう！

問題文全文(内容文)：
森田先生が英文法を解説します。

以下の問題に挑戦しましょう！
Since local people reported that they had seen bears in a nearby river, the police (　)　to the area.
ア. was sent
イ. sent
ウ. send
エ. were sent