以长为10的线段AB为直径作半圆，则它的内接矩形的面积的最大值为(   )

A．10

B．15

C．25

D．50

根据句意及首字母提示补全单词.

1. There is n_______ on the desk, but I saw  my pen just now.

2. Would you m_______ helping me with my maths ?

3. He a_______ to join us next week.

4. I'd like some w_______ to drink.

5. He g_______ me some cakes yesterday.