用所给单词的适当形式填空。

1. They are playing games. They are very ______ (relax).

2. There are many different kinds of ______ (scarf) in the mall.

3. What a ______ (sun) day it is!

4. The man enjoys ______ (lie) on the beach.

5. I usually sleep when it's ______ (rain).

如图所示，质量为M的直角三棱柱A放在水平地面上，三棱柱的斜面是光滑的，且斜面倾角为θ。质量为m的光滑球B放在三棱柱和光滑竖直墙壁之间，A和B都处于静止状态，求地面对三棱柱的支持力和摩擦力各为多少？