章节列表
思维导图
相似题库
练习中心
顺序练习
按照章节顺序依次练习所有题目，适合系统学习
组卷考试
随机抽取题目进行练习，适合巩固知识和检验学习效果
错题重做
针对做错的题目进行重点练习，强化薄弱环节
章节练习
选择特定章节进行练习，针对性提升某一知识点
收藏题目
集中练习收藏的重点题目，加深理解和记忆
考试记录
按题型或难度进行专项练习，突破学习瓶颈
题型练习
按照章节题型获取题目练习，适合系统学习
小练习
随机抽取题目练习
高频错题
按题目做错次数，加深记忆
题目预览
1.He came back late，()which time all the guests had already left.
2.I＇m very sorry to have ()you with so many questions on such an occasion.
3.If the whole operation ()beforehand， a great deal of time and money would have been lost.
4.The price of beer ()from 50 cents to $ 4 per liter during the summer season.
5.His remarks left me ()about his real purpose.
6.I have heard both teachers and students ()well of him.
7.Our son doesn＇t know what to()at the university; he can＇t make up his mind about his
future.
8.The house was very quiet， ()as it was on the side of a mountain.
9.Although they plant trees in this area every year， the tops of some hills are still().
10.Being a pop star can be quite a hard life， with a lot of travelling ()heavy schedules.
