根据《建筑法》，建设单位申请领取施工许可证应当具备的条件包括（　　）。

A．已经取得规划许可证

B．拆迁完毕

C．已经确定建筑施工企业

D．有保证工程质量和安全的具体措施

E．建设资金已经落实

I'm worried that I don't know ____ the composition. Don't worry! Read this book first, and then you'll

get an idea. [ ]

A. how to write

B. when to write

C. what to write

D. where to write