ここの文法が分からないので解説と回答お願いします

(2) 私はピートルズが初めて日本に来た日を覚えています。 I remember [Japan / the day/for the first time/ came / when / the Beatles / to J. I remember (3)あなたはなぜ今日会議がないか知っていますか。 Do you know [a meeting / why /today / don't/the reason / have / we ]? Do *you know (4)なぜ彼がそんなに悲しんでいるのかわからない。 I[he / so /why/know/sad/ don't /is]. (5) 彼女が6か国語を話せるのは本当です。 [true / six languages / she/is/it/that/can speak ]. (6)私たちのチームがそのトーナメントに勝ったことは驚くべきことだ。 [our team / it / amazing / is / that / won ] the tournament. the tournament. 4.意味がとおるように, [ (1)[you/ about/this book / know/do/is/what]? ]内の語句を並べかえて英文を完成しなさい。 (2) Kumi [where / before / in the lake / had never / swum / swam / she ]. Kumi (3) [why / tell / practice swimming/ the reason / me / you] every day. every day. (4) [in peace / all of us / when / the day / live] wili come. will come. (5) I[ that / saw /like a snake / something /looked ]. (6) [ that / it /true / is /is/ the singer ] my sister. my sister.

ここの文法が分からないので解説と回答お願いします

(2) 私はピートルズが初めて日本に来た日を覚えています。 I remember [Japan / the day/for the first time/ came / when / the Beatles / to J. I remember (3)あなたはなぜ今日会議がないか知っていますか。 Do you know [a meeting / why /today / don't/the reason / have / we ]? Do *you know (4)なぜ彼がそんなに悲しんでいるのかわからない。 I[he / so /why/know/sad/ don't /is]. (5) 彼女が6か国語を話せるのは本当です。 [true / six languages / she/is/it/that/can speak ]. (6)私たちのチームがそのトーナメントに勝ったことは驚くべきことだ。 [our team / it / amazing / is / that / won ] the tournament. the tournament. 4.意味がとおるように, [ (1)[you/ about/this book / know/do/is/what]? ]内の語句を並べかえて英文を完成しなさい。 (2) Kumi [where / before / in the lake / had never / swum / swam / she ]. Kumi (3) [why / tell / practice swimming/ the reason / me / you] every day. every day. (4) [in peace / all of us / when / the day / live] wili come. will come. (5) I[ that / saw /like a snake / something /looked ]. (6) [ that / it /true / is /is/ the singer ] my sister. my sister.

鉄の精錬において、銑鉄から鋼にする際にO2を吹き込む時、O2はどのような役割を果たしているのですか？ Cを除くための酸化剤ってことでいいんですかね、、？

鉄の精錬の原料は鉄鉱石だと習ったのですが、赤鉄鉱ではないのですか？鉄鉱石だと磁鉄鉱も混ざってしまうと思うのですが、、

合っているか確認してほしいです、お願いします！！

【1】( )に入る適切な語句を選びなさい。(1×20) find のhformation/②informations) about the event? 1. Did you any 2. (OHow much / Hoy.many ) pieces of luggage do you want to check in? 3. Did you find any (Oother(Danother) ways to relieve stress? 4. lapologize for (Dinforming not / 2nbt informing ) you about the schedule. 5. Ican't decide (Owhich to use picture //2which picture to use) for my New Year's card. 6. We tend (1Dto believe / ②believing ) that what is written is true. 7. Ineed (Ohot something/2something hot ) to warm me up. 8. We were not (Osurprising / 2surprised) at the news that the politician had resigned. 9. Is there (Dwrong anything //2ahything wrong) with your computer? 10. Each (Ostudents have //2student has) their own locker. 11. Ihad some bread for (Dthe breakfast / Da breakfast /( 3breakfast) this morning. 12. Would you care for/(Osome more cake / 2any more cake / ③any more cakes )? 13. We traveled Oby train / 2by the train / ③by a train) from London to Paris. 14. (OThis / 2That /(3t) is very stuffy in this classroom. 15. (OAII /2None / 3Both ) of these remarks are mine. They are from this book. 16. (OThis / 2That // ®t) is going to rain tomorrow. 17. Have youheard the rumor (Othat / ②which / ③what) our math teacher will get married soon? 18. Iwonder (Owhich / &if / ③what ) I have enough time to prepare for the test. 19. My brother is very busy ()writing / ②written / ③to write ) his graduation thesis. 20. Please leave those-sealed.packages (Duntouch / ②untouching/(③uptouched). 【2】日本語の意味に合うように、[] から適切な語を1回ずつ選びなさい。 (1×5) 1. 今日は大したニュースはありませんでした。 There wasn't ( 5) big news today. 2. 1日に何時間授業がありますか。 How( ) classes do you have each day? 3. 次の試合までほんのわずかの日数しかありません。 We have only (2) more days until the next game. 4. 先週は家事をすることにほとんど時間を使えませんでした。Ispent (4) time doing housework last week. 5.海岸にはほとんど人がいなかった。 There were ( people on the beach. [Omany のa few 3few @little ⑤much ]

この問題の解説と解答お願いします

(2) 私はピートルズが初めて日本に来た日を覚えています。 I remember [Japan / the day/for the first time/ came / when / the Beatles / to J. I remember (3)あなたはなぜ今日会議がないか知っていますか。 Do you know [a meeting / why /today / don't/the reason / have / we ]? Do *you know (4)なぜ彼がそんなに悲しんでいるのかわからない。 I[he / so /why/know/sad/ don't /is]. (5) 彼女が6か国語を話せるのは本当です。 [true / six languages / she/is/it/that/can speak ]. (6)私たちのチームがそのトーナメントに勝ったことは驚くべきことだ。 [our team / it / amazing / is / that / won ] the tournament. the tournament. 4.意味がとおるように, [ (1)[you/ about/this book / know/do/is/what]? ]内の語句を並べかえて英文を完成しなさい。 (2) Kumi [where / before / in the lake / had never / swum / swam / she ]. Kumi (3) [why / tell / practice swimming/ the reason / me / you] every day. every day. (4) [in peace / all of us / when / the day / live] wili come. will come. (5) I[ that / saw /like a snake / something /looked ]. (6) [ that / it /true / is /is/ the singer ] my sister. my sister.

仮定法を今やってて、５番の文の、pleaseの後は過去形にならないのですか？ 教えていただけると助かります。

IH I had much meney..Canld kuy..the ke 5. Should you see her, please tell me. shenld sxe. hek. please. tell.Me.

写真に書いてある問題全部教えてください‪( ;ᯅ; )‬

比例で､縦－面積の横－長さのグラフで表すと、どんなグラフになりますか？💦

ネット問題なのですが、答えと答えの式はあるのですがそれを見てもよくわかりません。教えてください、