They have left the country and will not come back.
use "that" when the meaning of the sentence changes. Sometimes "that" can be left out of the sentence. Never use a comma with "that". Use "which" when the meaning of the sentence does not change. Always use a comma with "which".
The queen sought to reign over the land with a firm hand, but her advisors reminded her to also rein in her impulses to maintain stability.
Immigration is the arrival of people from other countries hoping to make a new and better life for themselves than in the country they have left.
I left my headphones right here.
She was so confused that she just gave her head a shrug, and left.
Here is one sentence for determination: Determination is overwhelming me when I Look at the calender to see how many days are left for our field trip. (this might not be a good sentence but who cares.)
It depends on which people.
Your finger left a smudge on the otherwise clean window.
The meteor left a large crater where it landed.
That homely banjo player left us in the weeds.
Sentence: I had to wade in the water/snow to get my friend out of there. Question: Can you wade in the snow to get my shovel at the left?
A good sentence for explicit?.... "The women left EXPLICIT instructions explaining which medicines should be given to which cats." Random, but I think it demonstrates good use of the word.