use the truth is in sentence

The tasks in life seems hard but the truth is these challenges might make us prepared for what is coming in the future.
The truth is not always visible to everyone. If it is not, then it will reveal itself.
The truth is in the hands of the one who knows everything.
Those students keep on complaining whenever we give them a task because the truth is they are too lazy.
To her, the truth is unacceptable so she preferred to ignore it.
Aaron knows what the truth is.
The truth is not easy to find out. You have to do some investigation in order to acquire it.
The chefs served a low-quality meat without the event manager knowing it since the truth is the high-quality got rotten yesterday.
As always, the truth is not what you always wanted to hear.
The truth is your best friend in times of arguments.

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