問題文全文(内容文)：
$c$を実数とする。$x$についての2次方程式
$x^2+(3-2c)x+c^2+5=0$が2つの解$\alpha,\ \beta$を持つとする。
複素平面上の3点$\alpha,\beta,c^2$が三角形の3頂点になり、その三角形の重心は$0$であるという。
$c$を求めよ。

問題文全文(内容文)：
(1) Staff members were all the more delighted (23) they had not expected the outcome.
1. than
2. so
3. because
4 that

(2) These textbooks are for students (24) native language is not Japanese.
1. whose
2. who
3 that
4 of whom

(3) Have you told your sister what time (25) yet?
1. started the show
2. will the show start
3. start the show
4 the show will start

(4) When I visited Berlin last winter, I could hardly make myself (26) in German.
1. understand
2. understanding
3. to understand
4 understood

(5) I can leave home at five o'clock in the morning as (27) up early.
1. I'm used to get
2. I'm used to getting
3. I used to getting
4. I was used to get

(6) (28) last night was very comfortable considering how cheap it was.
1. The hotel in we stayed
2. The hotel we stayed
3. The hotel where we stayed
4. The hotel that we stayed

(7) George was made (29) selfish in the movie.
1. looking
2. looked
3. look
4. to look

(8) Remember (30) this letter by the weekend.
1. to mail
2. mailing
3. having mailed
4. to have mailed

(9) As Doris is well prepared for the game, she is very (31) to win the championship.
1. pretty
2. likely
3. probable
4. easy

(10) You must remember (32) I told you repeatedly. It is definitely important when you see your boss.
1. where
2. how
3. which
4. what

※会話文の大問は動画内参照

問題文全文(内容文)：
森田先生が、慶應義塾大学環境情報学部の英語入試を解説します。

講評を聞いて、復習の参考にしましょう！

問題文全文(内容文)：
明治大学商学部の2022年英語入試を解説します。

以下の問題に挑戦してみましょう！
⑴Do you remember (　) the lights off before we came out?
1 switching
2 that you switch
3 to have switched
4 to switch

⑵I have two cars: one is made in Japan and (　) in Germany.
1 another
2 others
3 the other
4 the others

⑶I should be obliged if you wouldn't interfere (　) my private concerns.
1 at
2 for
3 in
4 on

⑷I was a little boy who pointed out the fact (　) the king in the story was naked.
1 that
2 what
3 which
4 whose

⑸I understand you were wondering whether I'd be (　) of making enough room for someone else on stage.
1 capable
2 feasible
3 possible
4 practicable

問題文全文(内容文)：
難関大の英語長文で最もよく出る人物ヘンリー・フォードはどういう人物でなぜ歴史的に重要なのか世界史講師佐藤幸夫先生に解説してもらいました。またどういった文脈でフォードが英文に登場するのかも解説！