根据所给首字母，汉语提示或语境写出符合句意的单词或词组，每空一词
Users become a________ to crack cocaine much more easily if they smoke it.
All the ___________(参与者) in the debate had an opportunity to speak.
I was told that all six of them had piled into a car and_____ ______ _______ the railway station.(走向，前往)
Pop songs have to be c______ so that people can remember the main words the first time they hear it
Chopsticks Brothers, which_____ _____ (包括)director Xiao Yang and musician Wang Taili sang Little Apple at the 2014 American Music Awards.