根据句意和首字母提示完成句子,每空一词
1.Luckily ,he has an o—— to get an advanced study in Beijing.2.Most children can not c—— on one thing for a long time.3.The main difficulty to do the work is we have no e——.4.I'm worried that you will f—— the exam.5.Young kids should not be allowed to get their ear p——.6.Teenagers should not be allowed to drive because they are not s—— enough.7.Don't be s——!He won not tell you the truth.