因为你的帮助，我的英语口语得到了很大的改善，我的老师和朋友对我取得的进步感到很惊讶。
Thanks to your help, my spoken English has improved a lot, and my teachers and friends are surprised at the progress I've made.
老师们告诉我托德的行为改善了许多。
Teachers inform me that Todd's behaviour has improved no end.
最近，吴老师进行了几项调查，以改善学生的日常生活习惯。
Recently Mr. Wu has carried out several surveys to improve the students'daily habits.
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