–Come on, please give me some ideas about the project.--- Sorry. With so much work _________my mind, I almost break down.

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

_______ no buses , we have to walk home．

____ the temperature down day by day, the leaves are turning yellow.

Many strange new means of transport have been developed in our century, the strangest of _____ being perhaps the hovercraft(气垫船).