这几个句子有无语法错误,有请指出（不用给新句子,只要指出错误并改正）感谢大家帮助

题目

这几个句子有无语法错误,有请指出（不用给新句子,只要指出错误并改正）感谢大家帮助
1.【it is obvious that the bookstore is operated/traded by her assistant 】
2.【no sooner had the suggestion been declared in meeting than he stood up to raise the objection】
3.【final,he triumphantly invented a bike whose performance is better than any kind of bikes】
4.【you would solve the problem sooner or later,if only you try to do your best】
5.【it is unquestionable that the success depends on hard working】 ②
6.【all the things shown some worry arised in his plan】
7.【math teacher knows it is likely that all of students in classroom are unable to solve the problem,if tom can't solve the problem】
8.【the scientists have made a lot of experiment to show that praise is more effective than criticism for improving action of the people】
9.【i'd know that many today's young people listen to the music as making his homework】
10.青年人的教育对一个国家的未来是至关重要的.【that education of the younger is important for future of countries】
11.【i want to know whether you can help me to seek/get some travel guide of the city,maybe other things i want to get is a map of the highway】

答案

1.1.【...the bookstore (should)be operated/traded by her assistant 】2.【.at the meeting than .】3.【finally,he triumphantly invented a bike whose performance is better than any other kind of bikes】 ...