Question

oxygen /trees /give / us ​

Answer 1

Answer:

trees give us oxygen

is the answer

Answer 2

Answer:

Trees give us oxygen.

Explanation:

$\rightarrow$ We are dealing with jumble words here.

$\rightarrow$ Jumble words the the words to written in a proper manner to make sense in the sentences.

$\rightarrow$ It could be solved easily if tenses and speech are clear.