[3]
① Do you know the (fact) [(that)(同格の接続詞) <coral reefs(S) face(V) many dangers(O)>]? <完全な文>
② A lot of coral seem <to (have) (died)> around the world. <不定詞・完了形>
③ [(Not) (being) careful], divers may damage coral reefs. [分詞構文]
= <普通の文> As they are not careful, divers may damage coral reefs.
④ 〇
⑤ 〇
[4]
① Mr. White seems to have handed out some quizzes to the students. ※hand out … …を配る
② 〇
③ 〇 I've found some interesting articles related to science.
参考にしてください。