—I telephoned him twice and I couldn’t get through to him. —The line might have been out of order,     ?

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, ______?

—Lucy,        do you go to the park?—Three times a week.

---________ will your head teacher return from the USA?---In two days.