( ) 6. We can have _____blue sky if we create _____ less polluted world.
A. a; a
B. a;the
C. the; a
D. the;the
解析：选A. 此题容易误选C, D. 根据句意：如果我们创造一个没有污染的世界，那么我们就用一个蓝色的天空。
( ) 8. You like playing basketball, and he likes running, ____?
A. don’t you
B. doesn’t he
C. do you
D. does he
解析：选择B. 此题容易误选A. 其实不是对前面的句中进行反问，而是对he likes running进行反问。
3.He must be a teacher,___isn’t___he?
4.You must have lived here for a long time,__haven’t____you?
5.You must have seen him yesterday, ___didn’t___you?
6.They must hand in their papers today,__needn’t__they?
7.Everyone knows that, _don’t___they?或__doesn’t___he?
8.That he missed the exam made his parents worried,__didn’t___ ___it___?
9.I bought you a ticket yesterday, and you went to see the film with me,_didn’t___ __you____?
10.I am strong and healthy，__aren’t______I__?
11.We started early in the morning in order to catch the first bus.
We____set________ _____off_______ early in the morning in order to catch the first bus
www.99jianzhu.com/包含内容：建筑图纸、PDF/word/ppt 流程，表格，案例，最新,免费下载,施工方案、工程书籍、建筑论文、合同表格、标准规范、CAD图纸等内容。