16．-Have you worked here since you graduated?-No.I at a factory in Beijing for six years．( )A．wou——青夏教育精英家教网——

16．-Have you worked here since you graduated？
-No，I at a factory in Beijing for six years．（　　）

15．I'd appreciate ___ if you let me know in advance whether or not you will join us．（　　）

14．_____ has been announced that Chinese tennis star Li Na is to retire because of injuries．（　　）

13．World Wildlife Fund would appreciate_____if China continues to make efforts to protect endangered species．（　　）

12．As we know，attitude is altitude．Our attitude is ______ has changed everything in our life．（　　）

it is what that

what is it that

what it is that

it is that what

11．Ava and Jack are my lovely pet dogs，and I love ______ when we play games together．（　　）

10．Standing in the middle of _______was once a beautiful school，I looked around and found it lying in ruins after the earthquake．（　　）

9．One important thing______ Jane discovered was _______ chimps hunt and eat meat as well．（　　）

8．---You are late again．But this is ____ the bus broke down on the way．（　　）

7．He is very humorous，while his brother is rather serious．That is _________ their difference lies．（　　）

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