нужно раскрыть скобки и указать какое это время  1) when did you reaslise that your bicycle (to dissapear)?        2)if she (not to work ) hard she'll fail her final examinations   3)James was sure  that he (to pass) the examinations well    4)I've lost my purse-when (to lose)it    5)the train (arrive0 at two o"clock   6) Hanna (to offer ) a new job