—What’s wrong with my computer, Jack?—Let me have a check. OK, it works now.—You mean, nothing wrong with it, ________ ?

What a foolish child ,_______?

— Peter, you feed the gold fish and the two little tortoises, ______?　— I did it in the morning; it’s a routine for me now．

I don’t think The Flowers of War by Zhang Yimou is popular among teenagers, _________?

It’s the third time that Li Ming has been to Xi’an , _______? 

Look！The ground is wet.It must have rained last night，________？

Fighting an artificial greenhouse effect seems to be the greatest of environmental challenges, ________？

 There is no doubt that eating organic food will make you healthier, ________？

—Where _______?—I got caught in the traffic, or I would have been here sooner.

Nothing that you say can change his mind, ________？

(2013·甘肃河西五市一模)Look! The ground is wet. It must have rained last night, ________？

It's the first time that he has been to Australia，________？

 He must be helping the old man to water the flowers，________？

I told them not everybody could run as fast as you did，________？(2011·重庆)

It is the second time that you have been late, ______?

You must have watched that football match last night, __________?

I can’t believe that anyone else in the school can swim as fast as you, 　　　　?

(2013·亳州模拟)I’m sure you’d rather she went to school by bus, 　　　　?

I think he has tried his best to improve his handwriting, 　　　　?

Mrs Black doesn’t believe her son is able to design a digital camera, ______  ?