One of the most important questions they had to consider was__________ of public health
Where go to spend our summer vacation this year?
_____, Carolina couldn't get the door open.
Either you or one of your students___to attend the meeting__ tomorrow.
The most impressive sight in China,one of the wonders of the world,_____ the Great Wall.
The factory used 65 percent of the raw materials,the rest of which saved for other purposes.