We should realize that we can only achieve our goal if we are prepared to __ and learn from failure.
--How are your recent trip to Sichuan?—I’ve never had ______ one before.
Shy people often avoid situations would 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 .