解释几个初一的英语题并说明为什么，谢谢

1.Whose pens are these?改为同义句
Whose are pens these？
2.He__cool. 选择A.does B.likes C.looks
He looks cool.
3.汉译英：看！那个穿白色T恤、蓝色裤子的就是她！
Look!That wears the white T恤,blue trousers are that she.
4.汉译英：我穿着裤子。
I wear trouser