【情境探究﹣我学会了明理导行】以下是中学生小亮生活中的四个片段，请你运用所学知识，对以下情境进行探究。
– Why don't you go out to have fun?
– You see, we are studying for the tests these days. And we are ______ busy_____ we can't go out.
一个几何体的三视图如图所示，则这个几何体的表面积等于（ ）
