英语小题!!!急~~

翻译下列句子!（参照初2水平所学习的最高级）
1、世界上最长的河流是什么河?
2、五月三十日是我一生中最幸福的一天。
3、哪种动物最美丽？
4、你最喜欢的音乐是什么？
5、昨天是他最倒霉的日子。他永远不能忘。
6、长城是世界最长的墙，我已经去过两次了。
7、前天我买了一把椅子。它是最舒服的。
8、撒哈拉沙漠是世界最大的沙漠。
9、你知道太平洋是世界上最大的大洋吗？
10、夏天，秋天，冬天，你最喜欢哪一季？
11、哪一科最难,英语,语文,数学和物理？

what is the longest river in the world?

30th/May is the happiest day in my life.

what kind of animal is the most beautiful?

what kind of music do you like best?

yesterday is his worst day, he won't forget it forever.

the Great Wall is the longest wall in the world, i have been there twice.

i bought a chair the day befor yesterday, it's the most comfortable one.

Sahara is the biggest desert in the world.

do you know that Pacific is the vastest ocean in the world?

which season do you like best, summer, autumn or winter?

which is the hardest subject, English, Chinese, maths or physics?

Which is the longest river in the world?
May 30th is the happiest day in my life.
What kind of animals is the most beautiful?
What's your favorite music? What music do you like best?
Yesterday was his most unfortunate day. He won't forget it forever.