<span>(9) Sadly, even after that water is found, only some of its clean and safe enough to drink.
In this sentence the word "its" needs the apostrophe. Its without an apostrophe shows ownership. The noun after its should be something that it owns. This is not the case for this sentence. Its should be It is. To make this grammatically correct there needs to be an apostrophe between the t and s - it's.
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Answer:
A schedule is a plan that gives a list of events or tasks and the times at which each one should happen or be done.
