根据所给汉语意思完成句子， 一空一词。（没空1分， 共20分）
由于吸食纯可卡因的缘故，他病得严重。
He was extremely ill _______ _________ _________ __________ taking crack cocaine.
我看见老师朝前门走去，身后跟着一群学生。
I saw the teacher _______ _______ the front door, ______ a group of students _______ him.
许多与吸烟有关的疾病越来越引起人们的关注。
Many ________ ________ __________ ________ are increasingly drawing people’s concern.
她匆忙地给她母亲打了电话是因为她发现小偷闯入了她房间。
She hurried to call her mother. That was ________ she found a thief _________ __________ ___________ her room.
随着年龄的增长，他的耳朵聋了。
________ he grew __________, he began to _______ _________.