正确的词形填空
December is the          (twelve) month of the year .
Sony is the ________ (thin ) boy in the class .
_________(luck), he was not badly hurt.
The little boy’s             (die) made everyone sad.
This is a _________(please) trip and we all enjoy ourselves.
The famous ___________ (invent) has invented many useful inventions all his life.
My grandpa is over 80 , but he is               (knowledge).
They have been to America ___________(one).
As a ____________(science) , Qian Xuesen worked hard.
Please keep the window ____   __(close) because the wind is blowing hard.