SVP qui peux traduire les 5 phrase please pas de googke traduction svp

phrase 1:9/11 terrorist attacks were the worst in US history.

phrase 2:The twin towers were the tallest skyscrapers in New York.

phrase 3:I am the most enthusiastic student of the school and the hardest worker.I am therefore less lazy!

phrase 4:My English teacher is the nicest in the world!

phrase 5: English is easier than Chinese but harder than French .