He left his hometown, _____ never to come back again.
About 187 passengers were reported _____the shipwreck which happened last month.
Once new difficulties ________in your work, it’s always important to use your brains.
--How are your recent trip to Sichuan? —I’veneverhad ______ onebefore.
Shy people often avoid situationswould force them into close contact with other people.
—How long do you think it will be______man can finally solve the problem of cancer? —Well,it depends