He accidentally _______that he was actually in debts and a large sum of money was in great needto pay off the debts.[ ]

Even though Jack has failed many times in his experiment，he holds a belief________he will succeed oneday if he carries on with it.[ ]

the period of recent terrorist activities, people _____ not to touch andunattended bag

The boy is _______ to look after himself .

I__________through that bitterperiod without your generous help.