Question

4. There is plenty of water in the seas. We cannot
drink it. It is very salty. (however/because/
although)
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Answer 1

Although there is plenty of water in the seas however we can't drink it because it is very salty.

HOPE IT HELPS U:-):-):-):-):-):-)

Answer 2

although there is plenty of water in the seas ,however, we cannot drink it because it is very salty