_______ in thought, he almost ran into the car in front of him.
C
这里分词短语的意义应为“Ashewaslostinthought”，意为“由于陷入沉思”，这儿填入过去分词短语，表示一种状态，用作原因状语。
AccordingtoMaslow,self-actualizationneedexcludes_______
Thepolicemancameuptothelonelyhousewiththedoor_______,_______thereforawhileandthenenteredit.
Which of the folloing is NOT included in the fabled Five Mountains in China?
As to the various pollutions,which of the following is NOT true?
By the middle of the 21st century, the vast majority of the world ’s population will be living in cities _______ in the country.