根据句意和汉语注释，写出单词的正确形式

1. Next Friday is my grandpa's ________(九十九)birthday.

2. I could see her ________(透过)the window.

3. Edison and Einstein are both great ________(科学家).

4. ________(树叶) turn green when spring is coming.

下颌向左侧作咬合运动时（）

A.所向侧为工作侧

B.右侧为工作侧

C.所向侧为非工作侧

D.右侧为非工作侧

E.不能确定