Under no circumstances, he was warned, _____ to give the password to someone else.

(2009山东济宁质检) The house   we used to live    has been rebuilt．

If you don’t study hard, you’ll regret, _____ you?

—Daniel must have lost his job in that unemployment crisis,      he?—I don’t think so. Yesterday I saw him working together with his colleagues. 

Spacecraft “Discovery” has failed in the course of launch. ----_______? They have been preparing for the test.