根据语篇内容，用恰当的短语填空，使之意思完整。

     Thanks for your invitation. I'm sorry I can't visit you this week. I am __1__. This evening I'm going

to my cousin's house. It's my cousin's birthday. Today I have a toothache, so I have to see the dentist

tomorrow. On Friday, there will be a math test, and I __2__. On Friday evening, a new film will be on,

and I'm __3__ with my friends.

下列选项中不属于施工质量政府监督的主要内容的是( )。

A．地基基础

B．主体结构

C．环境质量

D．施工人员数量