what is the most difficult part of studying science麻烦用英文回答这个问题，2句话左右，谢谢

What is most important is ...还是What is the most important is ...,这个the 要加吗 What season is the most dangerous one? what season is the most dangerous why? What season is the most dangerous? the,is,most,movie,boring,what What is m___,it is free most of the time. what is the most sleepy animal in the world? What color is the most persistent in the sky what is the most sleepy animal in the world? What is the most important part of the body What is the most beatiful thing in the world What is the most pure thing in the world? what is the most popular indoor sport in the USA What do you think_____ A the most useful invention is B is the most useful invention What is the most important part of the body?What is the most important part of the body? 英语作文：If it is the end of the world,what will you dIf it is the end of the world what will you do on your last day? 划线部分中文意思1.Since John became her big dog,Mrs Smith has felt much safer than before.这里的big 2.--Can you clean the desk for me,Tom?--Well,DIF,John.这里的DIF什么意思?3.Tom is good at gardening.His garden is the most beautif What is the most important in your life now?