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课时作业(十) (时间：45分钟 满分：100分) Ⅰ.单句语法填空 1．It is not impossible for you to do it without others’ help. 2．Jack has been in low spirits these days.Having broken up with his girlfriend last week, he was also fired by his boss yesterday. 3．Equally attractive (attract) are the success stories of worldfamous people, which help me understand how a person can work hard to make the world a better place. 4．I need you to message me your full name and address so that I can send you the invitation (invite) to their wedding. 5．My teeth are really sensitive to hotness and coldness. 6．We appreciated his devotion (devote) of time and money to the project. 7．In China，packets of cigarettes come with a government health warning attached (attach) to them that smoking is harmful to health. 8．If he promises to do something he will do it, so you can rely on him to help you when you are in trouble. 9．He pretended to_have_finished (finish) the task when asked to hand in the workbook. 10．The experiment performed (perform) in the 1990s showed that many plants tolerate a wide range of light conditions. Ⅱ.单句改错 1．After some years，he has been formed the habit of having a walk after supper.去掉been | 
