1．Suddenly the doors opened ________ (自动地) as we approached.
答案：automatically
2．He ________ (停止) smoking, and talked something to the person next to him.
答案：quit
3．(2017·北京高考)One idea is that sleep helps us ________ (加强) new memories.
答案：strengthen
4．The problem of drug ________ (滥用) should be paid more attention to.
答案：abuse
5．I felt very ________ (惭愧的) of his rude behavior that night.
答案：ashamed
6．I am a________ to taking a walk after supper.
答案：accustomed
7．After the accident, he was b________ from driving alone.
答案：banned
