no modern technology, the Egyptians had to move each stone by hand.

_______ only 20 minutes to go before the train left, I felt uneasy in the taxi to the railway station.

__________, we'll come to see you again.

 _____the problem of land erosion getting more serious, the government is searching for a way to deal with it.    

A devastating(毁灭性的) mudslide in northwest China's Gansu Province earlier in August killed at least 1,467 , with 298 still ___ .