帮我看看这几句话有没有语法错误~

帮我看看这几句话有没有语法错误~
(1)This driver's carelessness led to this accident.
(2)This great football match gave everyone present a deep impression.
(3)She suggested we should visit the museum on weekends.
(4)This shop guaranteed that this kind of new computer could work for five years without any problems.
(5)As soon as he graduated from the university,he applied to a big company for a job.
(6)Eating balanced diet and doing enough exercise are very important to keep the hair healthy.
看起来很多,其实检查起来很快的啦~