下列财产中可作为抵押物的（）
A、某小学的操场
B、某人承包的耕地
C、某人被法院查封的公寓
D、产权清晰的房屋
参考答案：D
根据括号内汉语提示完成句子。
1. _________ (到目前为止), the organization has been founded for 30 years.
2. The winter vacation is coming. My family decide to go to Hainan for a _________ (两星期的) trip.
3. Do you know _________ (他是谁)?
4. Hurry up! The flight_________ (即将离开) in half an hour.
5. I plan to_________ (彻底打扫) my bedroom this weekend.
建设单位不办理工程质量监督手续的，工程不得开工
