.Had you joined the caht room ten minutes ago, you would have known what we _______about then.
--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
______ is known to us is that tobacco contains nicotine and other harmful products, so you should give up smoking.
This book is considered to be the best novel of its kind ever.