— How many jobs _______ Collin Manning, the exchange teacher to our school, has done?
— Five, _______ cook to teacher.

There happened to be nobody under the wall when it fell down, ____ ?

Measures must be taken before there is another collapse of the coal mine, ______?

He had little idea that it was getting so serious, __________?

Lily， help me put up the picture on the wall，　　　　？

.In the United States, bus travel doesn't cost much as train travel, 　　　　　　?

Mr. Smith doesn’t believe that his daughter can work out the problem that easily,_____?

How long ____ she would stay here?

— Have a cup of tea, ____?
— Thanks a lot.

Tom,you and I could hardly work out the mathematic problem, _______?