. You have must practiced speaking English for a long time before the contest is held, ________?

. He must be curious about everything in the lab, for this/that/it is the first time that he has been there, ________?

. The man standing there can’t be a university student, ________?

简单句：陈述句、疑问句、祈使句、感叹句与并列结构、并列句与并列连词及常用与特殊句型、语序
. Tim seldom failed in his exam, ________?

31. -- You haven't lost the ticket, have you?
-- _________. I know it's not easy to get another one at the moment.

23. — You can't finish the book in less than an hour, I suppose?
—_____________.

22．------You hate Lee，don’t you?
------________. I just think he’s a bit annoying，that’s a11．

261. The players of China won 150 gold medals in Pusan Asain Games of 2002. Our players _____ to be very great.

157. --- I will go picnicking with Jane this Sunday.
--- _____

37. As your spoken English gets better, _______ your written English.