How does salva's uncle help him get through the desert?

Salva's uncle encourages Salva by telling him things like you only need to walk as far as those...Salva's uncle is making Salva walk one step at a time, though slow, they're not stopping. And this shows perseverance.

Explanation:

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1- cleans/ tidies up

2- were

3-would be

4- had known

5-takes

6-must be/ have to be/should be