If one can really put the three points into action (practice) …
If we can really put the three points into action (practice), we will surely be able to live a healthy and happy life.
By doing these simple things, we surely can ….
By doing these simple things, we surely can go out of the door happily and come back home safe every day.
In this way, I believe (that)+子句
In this way, I believe that all the people may be able to enjoy the bus ride like me.
By putting them (the above) into practice…
By putting them (the above) into practice, I have been able to make constant progress in intellectual education.
5. (A) 唯有符合此三项要求，我们才能…。
Only by living up to the three requirements, can we ….
Only with combined efforts, can we ….
Only with combined efforts, can we expect Taiwan to take a new face in due course.
Last but no least, ….
Last but no least, the shortcoming in education is the cause contributing to juvenile delinquency.
This evidence shows that the importance of ～ cannot be overemphasized/emphasized too much.
This evidence shows that the importance of traffic safety cannot be overemphasized.
For these reasons, I ….
For these reasons, I think that receiving college education in Taiwan is wise.